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Terapêutica Dermatológica

Terapêutica Dermatológica

Jashin J. Wu

(2012)

Additional Information

Book Details

Abstract

Safely and effectively treat a full range of skin disorders with Comprehensive Dermatologic Drug Therapy, 3rd Edition! This trusted dermatology reference provides concise, complete, up-to-date guidance on today's full spectrum of topical, intralesional, and systemic drugs. Dr. Steven E. Wolverton and a team of leading international experts clearly explain what drugs to use, when to use them, and what to watch out for.

  • Consult this title on your favorite e-reader with intuitive search tools and adjustable font sizes. Elsevier eBooks provide instant portable access to your entire library, no matter what device you’re using or where you’re located.
  • Prescribe with confidence thanks to quick-access summaries of indications/contraindications, dosage guidelines, drug interactions, drug monitoring guidelines, adverse effects, and treatment protocols.
  • Assess your knowledge and prepare for certification or recertification with more than 800 review questions and answers throughout.
  • Contain costs and meet patient expectations with purchase information provided for major drugs.
  • Quickly evaluate drug options for each disease discussed using a highly detailed, disease-specific index.
  • Discover the best uses for new biologic therapeutics such as ustekinumab and rituximab, as well as newly improved TNF inhibitors.
  • Offer your patients the very latest in cosmetic procedures, including chemical peels, intradermal fillers, and botulinum toxin.
  • Use the safest and most effective drugs possible with new chapters on irritants and allergens in topical therapeutic agents, plus a new, separate chapter on mycophenolate mofetil.
  • Review drugs recently taken off the market by the FDA, and use that knowledge to improve your current dermatologic drug therapy.

Table of Contents

Section Title Page Action Price
Front cover cover
Comprehensive Dermatologic Drug Therapy i
Copyright page iv
Table of Contents v
List of contributors ix
Preface xv
What is new? xv
What is the same? xv
What is ‘electronic’? xv
Dedication xvii
Acknowledgements xix
From the UK (with Elsevier ties) xix
From the ‘States’ (with Indiana University Department of Dermatology ties) xix
From the ‘States’ and the World (the authors) xix
A dozen suggestions to help the reader optimally utilize this book xxi
References for drug interaction tables xxii
I Introduction 1
1 Basic principles of pharmacology 1
Introduction 1
Outline for the chapter 1
Pharmacokinetics – part I (Tables 1-2 and 1-3) 2
Drug absorption (The drug has to be absorbed and enter circulation) 2
Distribution (The drug has to travel to the site of intended action or to a reservoir) 2
Bioavailability (The drug has to be ‘available’ at the site of intended action) 4
Pharmacodynamics (the drug produces the desired pharmacologic effect) 4
Definitions (Table 1-4) 4
Drug receptors 4
Enzyme systems inhibited by drugs 5
Signal transduction and transcription factors 5
Pharmacokinetics – part II 6
Metabolism (The drug becomes more hydrophilic to favor renal and biliary excretion) 6
Excretion (The hydrophilic drug metabolites must leave the body) 8
Percutaneous absorption 9
General principles 9
Vehicles 10
Tachyphylaxis 10
Transdermal medication formulations 11
Bibliography: important reviews and chapters 11
Systemic drugs 11
Percutaneous absorption 11
2 Principles for maximizing the safety of dermatologic drug therapy 12
Introduction 12
Anticipation 13
Patient selection 13
II Important Drug Regulatory Issues 41
5 The FDA drug approval process 41
Introduction 41
Federal legislation for drug safety and efficacy 41
Food drug and cosmetic law 41
Kefauver–harris drug amendment 41
General testing required prior to marketing 42
Phase I–IV testing 42
Phase I testing 42
Phase II testing 42
Phase III testing 42
Pharmacovigilance process 43
Phase IV studies 43
Prescription Drug User Fee Act 43
FDA advisory panels 43
Off-label drug use 43
General principles 43
Food and Drug Administration Modernization Act 43
Generic drugs 44
Systemic drugs bioequivalence 44
Topical drug testing required 44
Special drug approval categories 44
Compassionate use regulations 44
Drug Price Competition and Patent Restoration Act 44
Orphan Drug Act 44
Related issues 44
Regulation of over the counter drugs, biologicals, and generics 44
Regulation of combination products 44
Comparisons of FDA regulation with other countries 44
Some final thoughts 45
Bibliography: important reviews 45
6 Pharmacovigilance: 46
Introduction 46
Principle 46
III Systemic Drugs for Infectious Diseases 61
8 Systemic Antibacterial Agents 61
Introduction 61
Penicillins 62
Pharmacology 63
Antimicrobial activity 63
Pharmacokinetics 63
Clinical use 63
Dermatologic uses (Table 8-2) 63
Antibacterial indications 63
Non-specific penicillin benefits 63
Adverse effects 63
Hypersensitivity reactions 63
Cross-reaction potential 64
Other important adverse effects 64
Drug interactions 64
Dosage 64
Cephalosporins 64
Cephalexin and many others 64
Pharmacology 64
Antimicrobial activity 64
First generation 64
Second generation 65
Third generation 65
Fourth generation 66
Fifth generation 66
Pharmacokinetics 66
Clinical use 66
Dermatologic indications 66
First generation 67
Second generation 67
Third generation 67
Fifth generation 67
Adverse effects 67
Hypersensitivity reactions and cross-reaction potential 67
Other adverse effects 67
Hematologic effects 67
Nephrotoxicity 67
IV Systemic Immunomodulatory and Antiproliferative Drugs 143
12 Systemic corticosteroids 143
Systemic corticosteroids 143
Pharmacology (Table 12-1) 143
Structure 143
Absorption and distribution 145
Metabolism and excretion 145
Mechanism of action 145
Normal HPA axis function 145
Glucocorticoid effects (Table 12-4) 145
Mineralocorticoid effects (Table 12-4) 147
Glucocorticoid Receptor Physiology and Corticosteroid Resistance 147
Corticosteroids and Transcription Factors 148
Corticosteroid-induced apoptosis 148
Clinical use 149
FDA-Approved Indications and Off-Label Dermatologic Uses 149
Pemphigus vulgaris 149
Bullous pemphigoid 150
Cicatricial pemphigoid (mucous membrane pemphigoid) 151
Stevens–Johnson syndrome and toxic epidermal necrolysis 151
Erythema multiforme minor 152
Lupus erythematosus 152
Dermatomyositis 152
Vasculitis 152
Pyoderma gangrenosum 152
Acute dermatitis 153
Lichen planus 153
Sarcoidosis 153
Androgen excess syndromes 153
Postherpetic neuralgia 153
Intramuscular corticosteroid administration 154
Background issues 154
HPA-axis suppression 154
General dosing strategies 154
Pulse intravenous corticosteroid administration 154
General philosophy and dosing strategies 154
Specific disease indications 155
Risks of pulse IV CS 155
Summary 155
Adverse effects 155
General points regarding tables for adverse effects 155
Potentially fatal complications 155
Pregnancy risk 157
Other adverse effects with the potential for serious morbidity 158
HPA-axis suppression 159
Adrenal insufficiency – definitions 159
HPA-axis suppression – overview 160
Alternate means of stress responsiveness (see Box 12-1 HPA axis in a nutshell) 160
Laboratory tests of HPA axis function (Table 12-12) 160
Adrenal crisis and steroid withdrawal syndrome (SWS) 161
Stress corticosteroid doses – historical perspective 161
Stress corticosteroid doses – newer perspective 162
Drug interactions 162
Monitoring guidelines (Box 12-6 and Table 12-15) 162
Therapeutic guidelines 163
Individualized risk–benefit analysis 163
Acute dosage options 163
Corticosteroid dosing principles for children 164
Corticosteroid formulation choice 164
Tapering principles (Q12-11 Box 12-8) 164
Alternate-day corticosteroid therapy 165
Patient involvement in the therapeutic process 165
Systemic corticosteroids chapter update 165
Miscellaneous issues 166
Frequency of use of CS in general 166
Mechanism of action 166
Metabolism from inactive to active form of various CS 166
Segra (selective glucocorticoid receptor agonists) 166
HPA axis issues 166
Perioperative ‘stress’ doses of CS 166
Timing of CS administration 166
Adverse effects 166
Lipodystrophy and related metabolic syndrome changes 166
High frequency of mood and thought disorders 166
High frequency of menstrual abnormalities 166
Optimal combination of half-life and sodium retention 166
Tuberculosis risk and screening 167
Very low doses of CS and osteoporosis-related fracture risk 167
Osteonecrosis with short courses of CS 167
Bibliography: Important Reviews and Chapters 167
Basic science and pharmacology 167
Adverse effects overviews 167
Mechanisms of action 167
References (Reviews) for Chapter Update Section* 168
Web references 168.e1
Introduction and pharmacology 168.e1
Mechanisms of action 168.e1
Clinical use – pemphigus vulgaris 168.e1
Pemphigus in children, paraneoplastic pemphigus 168.e1
Bullous pemphigoid 168.e1
Cicatricial pemphigoid 168.e2
Herpes gestationis 168.e2
Other autoimmune bullous dermatoses 168.e2
Stevens-Johnson syndrome and TEN 168.e2
Lupus erythematosus 168.e2
Dermatomyositis 168.e2
Vasculitis 168.e2
Pyoderma gangrenosum 168.e2
Behçet’s disease and Sweet’s syndrome 168.e2
Dermatitis 168.e2
Lichen planus 168.e3
Sarcoidosis 168.e3
Other dermatoses 168.e3
Herpes zoster 168.e3
Intramuscular corticosteroids 168.e3
Pulse intravenous corticosteroids 168.e3
Adverse effects – general 168.e3
Bowel and peptic ulcer perforation 168.e3
Pancreatitis 168.e4
Diabetic complications 168.e4
Infectious complications 168.e4
Corticosteroids in pregnancy 168.e4
HPA axis suppression 168.e4
Therapeutic guidelines 168.e4
13 Methotrexate 169
Introduction 169
Pharmacology 169
Structure 169
Absorption and distribution 169
Metabolism and excretion 170
Mechanism of action 170
Dna synthesis effects 170
T-cell effects 171
Immunosuppressive effects 171
Anti-inflammatory effects 171
Folic acid effects on methotrexate therapy 171
Clinical use 172
Indications 172
FDA-approved dermatologic indications 172
Psoriasis 172
Off-label dermatologic uses 174
Other proliferative disorders 174
Immunobullous dermatoses 174
Autoimmune connective tissue diseases 174
Vasculitis and neutrophilic dermatoses 174
Other dermatoses 175
Summary of ‘off-label’ dermatology indications 175
Adverse effects 175
Hepatotoxicity 175
Pulmonary toxicity 176
Hematologic effects 176
Malignancy induction 177
Gastrointestinal effects 177
Reproductive effects 177
Renal effects 177
Other adverse effects 177
Drug interactions 178
Monitoring guidelines (Box 13-3) 178
General issues and risk-factor assessment 178
Liver biopsy 178
Laboratory monitoring 180
Therapeutic guidelines 180
Bibliography: Important Reviews and Chapters 181
Pharmacology 181
Dermatology guidelines 181
Adverse effects overviews 181
Rheumatology viewpoint on methotrexate 181
References* 181
Web references 181.e1
Introduction and pharmacology 181.e1
Clinical use – approved indications 181.e1
Indications – proliferative dermatoses 181.e1
Indications – bullous dermatoses 181.e1
Indications – autoimmune connective tissue diseases 181.e1
Indications – vasculitis and neutrophilic dermatoses 181.e2
Other indications. 181.e2
Hepatotoxicity 181.e2
Pulmonary toxicity 181.e2
Hematologic toxicity 181.e3
Malignancy induction 181.e3
Other adverse effects 181.e3
Monitoring and therapeutic guidelines 181.e3
14 Azathioprine 182
Introduction 182
Pharmacology 182
Absorption and distribution 182
Metabolism and excretion 182
Three pathways for azathioprine metabolism (Table 14-3) 182
Thiopurine methyltransferase polymorphism 183
Xanthine oxidase catabolic pathway 184
HGPRT anabolic pathway 184
Azathioprine dosing based on TPMT activity 184
Mechanism of action 184
Clinical use 184
Off-label dermatologic uses 184
Immunobullous dermatoses 185
Vasculitis 185
Neutrophilic dermatoses 185
Autoimmune connective tissue diseases 185
Dermatitis and papulosquamous dermatoses 185
Photodermatoses 185
Other dermatoses 186
Contraindications 186
Adverse effects (Box 14-3) 186
Immunosuppression carcinogenesis 186
Myelosuppression 186
Risk of infection 186
Vaccinations 187
Pregnancy, lactation, and fertility 187
Hypersensitivity syndrome 187
Gastrointestinal effects 187
Hepatic effects 187
Drug interactions (Table 14-4) 187
Monitoring guidelines 188
Summary 188
Bibliography: Important Reviews and Chapters 189
Azathioprine prescribing guidelines 189
Immunosuppressive and cytotoxic drug overviews (including azathioprine) 189
Thiopurine methyltransferase – overview 189
Adverse effects – carcinogenesis 189
References* 189
Web References 189.e1
Introduction 189.e1
Pharmacology – metabolism overview 189.e1
Thiopurine methyltransferase polymorphism 189.e1
Azathioprine dosing based on TPMT activity 189.e1
Mechanism of action 189.e1
Clinical use – immunobullous dermatoses 189.e1
Vasculitis 189.e1
Neutrophilic dermatoses 189.e1
Autoimmune connective tissue diseases 189.e1
Dermatitis and papulosquamous dermatoses 189.e1
Photodermatoses 189.e1
Other dermatoses 189.e1
Adverse effects – carcinogenesis 189.e1
Miscellaneous adverse effects 189.e2
Hypersensitivity syndrome 189.e2
Gastrointestinal and hepatic adverse effects 189.e2
Drug interactions 189.e2
15 Mycophenolate mofetil and mycophenolic acid 190
Introduction 190
Pharmacology 190
Mechanism of action 191
Clinical use 192
Off-label dermatologic uses 192
Psoriasis 192
Immunobullous disease 193
Pemphigus 193
Other immunobullous dermatoses 193
AUTOIMMUNE CONNECTIVE TISSUE DISEASE 193
Lupus erythematosus 193
Dermatomyositis 193
Vasculitis 193
Systemic sclerosis 194
Atopic dermatitis 194
Contraindications 194
Adverse effects 194
Carcinogenicity 194
GI toxicity 195
Hematologic 195
Infectious 195
Pregnancy 195
Drug interactions 195
Treatment guidelines 197
Monitoring guidelines 197
Bibliography: Important Reviews and Chapters 198
References* 198
Web References 198.e1
Introduction 198.e1
Pharmacology 198.e1
Mechanism of action 198.e1
Psoriasis 198.e1
Pemphigus 198.e1
Other immunobullous diseases 198.e1
Lupus erythematosus 198.e2
Dermatomyositis 198.e2
Vasculitis 198.e2
Systemic sclerosis 198.e2
Atopic dermatitis 198.e2
Carcinogenicity 198.e2
Gastrointestinal and hematologic adverse effects 198.e3
Infectious adverse effects 198.e3
Drug interactions 198.e3
Monitoring and treatment guidelines 198.e3
Additional dermatoses not discussed in text 198.e3
16 Cyclosporine 199
Introduction 199
Pharmacology 199
Structure 199
Absorption and Bioavailability 199
Metabolism and Excretion 200
Mechanism of Action 200
Clinical Use 200
FDA-approved indication 200
Psoriasis 200
Off-Label Dermatologic Uses 202
Atopic dermatitis 202
Pyoderma gangrenosum 202
Chronic idiopathic urticaria 204
Contraindications 204
Adverse Effects 204
Renal effects 204
Hypertension 204
Malignancy risk 204
Hyperlipidemia 205
Other adverse effects 205
Drug Interactions 205
Monitoring Guidelines 205
CsA blood levels 205
Hypertension 205
Renal function monitoring 206
Therapeutic Guidelines 207
Baseline assessment 207
Dosage and Treatment Regimens 207
Conversion from Sandimmune to neoral formulation 209
Sequential therapy involving cyclosporine and acitretin 209
Sequential therapy with other systemic therapies 209
Summary 210
Bibliography: Important Reviews and Chapters 210
General overviews 210
Consensus statements 210
Adverse effects overviews 210
References* 211
Web References 211.e1
Introduction 211.e1
Pharmacology 211.e1
Psoriasis (see also references 74–82) 211.e1
Monitoring and therapeutic guidelines – psoriasis 211.e1
Lichen planus 211.e1
Bullous dermatoses 211.e1
Autoimmune connective tissue diseases 211.e1
Neutrophilic dermatoses 211.e1
Atopic dermatitis 211.e1
Alopecia 211.e1
Granulomatous dermatoses 211.e1
Disorders of keratinization 211.e2
Photosensitivity dermatoses 211.e2
Other dermatoses 211.e2
Urticaria 211.e2
Contraindications 211.e2
Adverse effects – renal and hypertension 211.e2
Malignancy Risk 211.e2
Miscellaneous issues 211.e2
17 Cytotoxic agents 212
Introduction 212
Major subcategories of cytotoxic agents and the cell cycle 212
Patient education issues 213
Antimetabolites 214
Thioguanine 214
Pharmacology (Table 17-2) 214
Mechanism of Action 214
Clinical Use 215
Off-Label Dermatologic Uses 215
Psoriasis 215
Contraindications 215
Adverse Effects 215
Myelosuppression 215
Gastrointestinal effects 215
Drug Interactions 215
Monitoring Guidelines 216
Therapeutic Guidelines 216
Hydroxyurea 216
Pharmacology (Table 17-2) 216
Mechanism of Action 216
Clinical Use 216
Psoriasis 217
Contraindications 217
Adverse Effects 217
Myelosuppression 217
Cutaneous adverse effects 217
Other adverse effects 218
Drug Interactions 218
Monitoring Guidelines 218
Therapeutic Guidelines 218
Alkylating agents 218
Cyclophosphamide 219
Pharmacology 219
Mechanism of Action 219
Clinical Use 219
Vasculitis 220
Mucous membrane pemphigoid (Cicatricial pemphigoid) 221
Pemphigus 221
Contraindications 221
Adverse Effects 221
Hemorrhagic cystitis and bladder cancer 221
Carcinogenesis 222
Other adverse effects 222
Drug Interactions 222
Monitoring Guidelines 223
Therapeutic Guidelines 224
Chlorambucil 224
Pharmacology 224
Mechanism of Action 224
Clinical Use 224
Off Label Dermatologic Uses 224
Necrobiotic xanthogranuloma 224
Pyoderma grangrenosum 224
Contraindications 225
Adverse Effects 225
General adverse effects 225
Carcinogenesis 225
Drug Interactions 226
Monitoring Guidelines 226
Therapeutic Guidelines 226
Melphalan 226
Bibliography: Important Reviews and Chapters* 227
Web References 227.e1
Thioguanine 227.e1
Hydroxyurea 227.e1
Cyclophosphamide 227.e2
Chlorambucil 227.e3
Melphalan 227.e4
18 Dapsone 228
Introduction 228
Pharmacology 228
Absorption and bioavailability 228
Metabolism (Figure 18-2) 229
Excretion 230
Mechanism of action (Table 18-3) 230
Neutrophil respiratory burst (Figure 18-3) 230
Neutrophil chemotaxis 232
Effect on eosinophils and monocytes 232
Effects of dapsone metabolites 232
Clinical use 232
Dermatologic indications – consistent efficacy 232
Dermatitis herpetiformis 233
Linear iga Bullous Dermatosis and Chronic Bullous Dermatosis of Childhood Q18-5 233
Bullous eruption of systemic lupus erythematosus 233
Leprosy 233
Erythema elevatum diutinum 233
Other dermatologic indications – variable efficacy (Box 18-1) 233
Autoimmune bullous dermatoses 234
Vasculitis 234
Neutrophilic dermatoses 234
Other dermatoses 234
Contraindications (Box 18-1) 234
Adverse effects – pharmacologic 234
Hemolytic anemia 234
Methemoglobinemia 235
Measures to treat hemolysis and methemoglobinemia 235
Adverse effects – idiosyncratic 236
Agranulocytosis 236
PERIPHERAL NEUROPATHY 236
Other neurologic effects 236
Gastrointestinal effects 236
Dapsone hypersensitivity syndrome 237
Other cutaneous hypersensitivity eruptions 237
Cross-reactivity with sulfonamide antibiotics 237
Photosensitivity 237
Carcinogenesis 237
Pregnancy and lactation 237
Drug interactions (Table 18-4) 237
Monitoring guidelines (Box 18-3) 237
Therapeutic guidelines 239
Bibliography: Important Reviews and Chapters 240
References* 240
Web references 240.e1
Introduction and pharmacology 240.e1
Dapsone mechanisms of action 240.e1
Dermatitis herpetiformis 240.e1
Bullous systemic lupus erythematosus 240.e1
Leprosy 240.e1
Erythema elevatum diutinum 240.e1
Autoimmune bullous dermatoses 240.e1
Vasculitis 240.e2
Neutrophilic dermatoses 240.e2
Cutaneous lupus erythematosus 240.e2
Relapsing polychondritis 240.e2
Granuloma annulare 240.e2
Brown recluse spider bites 240.e2
Granuloma faciale 240.e2
Rosacea 240.e2
Panniculitis 240.e2
Other dermatoses 240.e2
Dapsone and sulfonamide cross-reactivity 240.e2
Hemolytic anemia and methemoglobinemia 240.e2
Agranulocytosis 240.e2
Peripheral neuropathy 240.e2
Other neurologic effects 240.e3
Gastrointestinal effects 240.e3
Dapsone hypersensitivity syndrome 240.e3
Other adverse effects 240.e3
Monitoring guidelines 240.e3
19 Antimalarial agents 241
Introduction 241
Pharmacology 241
Structure 241
Absorption and bioavailability 241
Metabolism and excretion 242
Mechanism of action 243
Effects on photosensitivity dermatoses 243
Immunosuppressive effects 243
Anti-inflammatory effects 243
Other mechanisms of action 243
Clinical use 243
FDA-approved indications 243
Lupus erythematosus 244
Off-label uses 244
Porphyria cutanea tarda 244
Other photodermatoses 244
Granulomatous dermatoses 245
Benign lymphocytic infiltrates 245
Panniculitis 245
Other dermatoses 245
Psoriatic arthritis 245
Contraindications 245
Adverse effects 246
Retinopathy 246
Other ocular effects 247
Use in Children 247
Use in Pregnancy and Lactation 247
Miscellaneous systemic adverse effects 247
Cutaneous adverse effects 247
Acute poisoning 248
Monitoring guidelines70–72,107 248
Drug interactions 248
Therapeutic guidelines 248
Treatment of PCT 250
Bibliography: important antimalarial reviews and chapters 250
Antimalarial overviews 250
References* 251
Web references 251.e1
Introduction and pharmacology 251.e1
Lupus erythematosus 251.e1
FDA-approved indications 251.e1
Off-label uses – porphyria cutanea tarda 251.e1
Other photosensitivity dermatoses 251.e1
Benign lymphocytic infiltrates 251.e2
Panniculitis 251.e2
Other dermatoses 251.e2
Psoriatic arthritis 251.e2
Risk in pregnancy 251.e2
Other contraindications 251.e2
Adverse effects – ocular risk 251.e2
Use in pregnancy and in children 251.e2
Miscellaneous systemic adverse effects 251.e2
Cutaneous adverse effects 251.e3
Poisoning 251.e3
Monitoring and therapeutic guidelines 251.e3
20 Systemic retinoids 252
Introduction and historical perspective 252
Pharmacology 253
Vitamin A physiology 253
Structure 254
Absorption and distribution 254
Metabolism and excretion 254
General aspects 254
Acitretin re-esterification (reverse metabolism) 255
Mechanism of retinoid action 255
Transport of Retinoids 255
Mechanism at the Nuclear Level 255
Clinical use 255
Practical considerations 256
FDA-approved indications 256
Psoriasis – retinoids as monotherapy 256
Psoriasis – Retinoids in Combination Therapy 257
Retinoids in Combination with Biologic Agents 257
Acne vulgaris 257
CTCL – Mycosis Fungoides and Sézary Syndrome 258
Off-label dermatologic uses 258
Rosacea 258
Hidradenitis Suppurativa and Dissecting Cellulitis of the Scalp 258
Darier’s disease 258
Pityriasis rubra pilaris 258
Ichthyosiform dermatoses 258
Chemoprevention of Malignancy 258
Lupus erythematosus 259
Lichen planus 259
Chronic hand eczema 259
Adverse effects 259
Teratogenicity – Women Exposed to Retinoids 260
Teratogenicity – Males Exposed to Retinoids 260
The ‘iPledge’ Registry Requirements and an Update After the First Year of the Program 261
Mucocutaneous adverse effects 261
Lipid effects 261
Depression 262
Inflammatory bowel disease 262
Bone effects 263
Ocular effects 263
Liver effects 264
Thyroid effects 264
Central nervous system effects 264
Muscle effects 264
Hair and Nail Effects 264
Hematologic effects 264
Drug interactions 264
Monitoring guidelines 264
Therapeutic guidelines 267
Acknowldgment 267
Bibliography: Important Reviews and Chapters 268
Drug category overviews 268
Specific retinoids 268
Retinoid chemoprevention of malignancies 268
Adverse effects overviews and monitoring guidelines 268
References* 268
Web references 268.e1
Introduction and historical perspective 268.e1
Pharmacology 268.e1
Mechanism of action 268.e1
Psoriasis – monotherapy 268.e1
Psoriasis – combination therapy 268.e1
Acne 268.e1
Cutaneous T-cell lymphoma 268.e2
V Drugs Used in Conjunction with Ultraviolet or Visible Light 279
22 PUVA photochemotherapy and other phototherapy modalities 279
Introduction and drug history 279
Puva photochemotherapy 279
Pharmacology 279
Structure 280
Absorption 280
Bioavailability 280
Metabolism 281
Excretion 281
Photochemistry 281
Mechanism of action 281
Suppression of DNA Synthesis 281
Photoimmunologic effects 281
Selective cytotoxicity 281
Stimulation of Melanocytes 281
Summary 281
Clinical use 281
FDA-approved indications 281
Psoriasis 281
Vitiligo 281
Off-label dermatologic uses 282
Cutaneous T-cell Lymphoma 282
Other cutaneous malignancies 282
Dermatitis and Papulosquamous Dermatoses 282
Photosensitivity dermatoses 282
Other pruritic dermatoses 283
Other immunologic dermatoses 283
Miscellaneous dermatoses 283
Contraindications 283
Treatment procedure 283
Methoxsalen administration 283
UVA radiation 283
Clearance schedule 284
Maintenance schedule 284
Adjunctive treatment 284
Combination treatments 284
Protection 284
Short-term adverse effects 285
Long-term adverse effects 285
Non-melanoma skin cancer risk 285
Melanoma risk 286
Other long-term risks 286
Drug interactions 286
Monitoring guidelines (Box 22-8) 286
Therapeutic guidelines 286
Other forms of PUVA therapy 286
Narrowband UVB phototherapy 287
Introduction 287
Clinical use 287
Psoriasis 287
Vitiligo 287
Neoplastic dermatoses 287
Atopic dermatitis 287
Photosensitivity dermatoses 287
Pruritus 287
Miscellaneous dermatoses 287
Contraindications 287
Treatment procedure 287
Protection 288
Adverse effects 288
UVA-1 phototherapy 288
Clinical use 288
ATOPIC ECZEMA/DERMATITIS 289
Scleroderma 289
Systemic lupus erythematosus 289
Contraindications 289
Treatment procedure 289
Adverse effects 289
Bibliography: Important Reviews and Chapters 289
Guidelines of care for PUVA 289
Puva indications 289
Puva safety issues 289
References* 290
Web references 290.e1
Introduction and pharmacology 290.e1
Clinical use – psoriasis 290.e1
Vitiligo 290.e1
Neoplastic 290.e1
Papulosquamous/dermatitis 290.e1
Photosensitivity dermatoses 290.e1
Other off-label uses 290.e1
Treatment procedure 290.e2
Adverse effects 290.e2
Non-melanoma skin cancer risk 290.e2
Controversy on possible melanoma risk (see also80–88) 290.e2
Cataract risk 290.e2
Drug interactions 290.e2
Need for long-term or intermittent therapy 290.e2
Other forms of PUVA photochemotherapy 290.e2
Narrowband UVB phototherapy 290.e3
UVA-1 phototherapy 290.e3
23 Extracorporeal photochemotherapy (photopheresis) 291
Introduction 291
Treatment delivery and considerations 291
Pharmacology 292
Mechanism of action – ECP 292
Cutaneous T-cell lymphoma 292
Autoimmune dermatoses 293
Clinical use 293
FDA-approved indications 293
Cutaneous t-cell lymphoma 293
Monitoring CTCL Response to ECP (Box 23-3) 294
Combination Therapy in CTCL Patients 294
Other dermatologic uses – treatment of T-cell-mediated autoimmune dermatoses 295
Monitoring Response of Autoimmune Dermatoses to ECP 295
Graft-versus-host disease (GVHD) 295
Scleroderma 296
Erosive oral lichen planus 296
Pemphigus vulgaris and foliaceus 296
Epidermolysis bullosa acquisita 297
Adverse effects 297
Therapeutic guidelines 298
Bibliography: Important Reviews and Chapters 298
References* 298
Web references 298.e1
Mechanism of action – CTCL 298.e1
Mechanism of action – autoimmunity 298.e1
Clinical use – CTCL 298.e1
Scleroderma 298.e1
Pemphigus vulgaris 298.e1
Pemphigus foliaceous 298.e1
Epidermolysis bullosa acquisita 298.e1
Acute GVHD 298.e1
Chronic GVHD 298.e1
Nephrogenic systemic fibrosis 298.e1
Oral erosive lichen planus 298.e2
FDA-approved indications – CTCL 298.e2
Multimodality treatment in CTCL 298.e2
Monitoring ECP in CTCL 298.e2
Clinical use – GVHD 298.e2
Scleroderma 298.e2
Clinical use – other dermatoses 298.e2
Autoimmune blistering diseases 298.e2
24 Photodynamic therapy 299
Introduction 299
Pharmacology 299
Structure 299
Absorption and bioavailability 299
Metabolism and elimination 299
Mechanisms of action 300
Factors influencing porphyrin accumulation and activation 300
Photochemical and photobiologic reactions 300
Mechanisms pertinent to various dermatoses treated 300
Formulations available 300
Aminolevulinic acid 300
Methyl aminolevulinate 300
Other 301
Clinical use 301
FDA-approved indications 301
Actinic keratosis 301
Off-label uses 302
Basal cell carcinoma 302
Squamous cell carcinoma in situ 302
ACNE 302
Photoaging 302
Other applications 303
Contraindications 303
Pregnancy and lactation 303
Children and adolescents 303
Carcinogenicity, mutagenicity and impairment of fertility 303
Precautions 303
Adverse effects 303
Phototoxic reactions – desired and excessive 303
Pigmentary abnormalities and hypersensitivity reactions 303
Systemic absorption potential 303
Drug interactions 303
Monitoring guidelines 303
General therapeutic guidelines for PDT treatment of actinic keratoses 303
Bibliography: important photodynamic therapy reviews and chapters 304
Historical perspective 304
Pharmacology 304
General overviews 304
Web References 305.e1
Introduction and pharmacology 305.e1
Clinical use – actinic keratoses 305.e1
Basal cell carcinomas 305.e1
Squamous cell carcinoma – in situ 305.e1
Acne vulgaris 305.e1
Photoaging 305.e1
Other off-label uses 305.e1
Sunscreens for protection post-PDT 305.e1
References* 304
VI Biological Therapeutics 307
25 Tumor necrosis factor (TNF) inhibitors 307
Introduction – psoriasis pathogenesis 307
Etanercept 309
Pharmacology 309
Clinical use 309
FDA-approved indications (Box 25-131–63) 309
Plaque psoriasis 309
Off-label dermatologic uses 310
Contraindications 311
Adverse effects of etanercept 311
Anti-drug antibodies 311
Injection site reactions 311
Drug interactions 311
Monitoring guidelines 311
Therapeutic guidelines 311
Infliximab 312
Pharmacology 312
Clinical use 312
FDA-approved indications (Box 25-249,83–110) 312
Psoriatic arthritis and psoriasis 312
Off-label dermatologic uses 313
Contraindications 313
Adverse effects 313
Infusion reactions 313
Anti-drug antibodies 313
Hepatotoxicity 313
Drug interactions 313
Monitoring guidelines 314
Therapeutic guidelines 314
Adalimumab 314
Pharmacology 314
Clinical use 314
FDA-approved indications (Box 25-3) 314
Psoriasis 314
Off-label dermatologic uses 315
Contraindications 315
Adverse effects 315
Injection site reactions 315
Anti-drug antibodies 315
Drug interactions 315
Monitoring guidelines 315
Therapeutic guidelines 315
Adverse effects of the tnf blockers in general 315
Malignancy risk – lymphoma 315
Skin cancer risk 316
Malignancies in children 316
Infections 316
Neurological disease 317
Congestive heart failure 317
Autoimmunity 317
Hematologic toxicity 317
Monitoring guidelines 317
Bibliography: important reviews and chapters 318
Basic science overview with TNF inhibitors 318
TNF inhibitors overviews for psoriasis/psoriatic arthritis 318
Off label uses of TNF inhibitors 318
Risks of TNF therapy 318
Web References 318.e1
Introduction 318.e1
Etanercept – pharmacology 318.e1
Etanercept – clinical trials 318.e1
Etanercept – off-label uses 318.e1
Etanercept – contraindications 318.e2
Etanercept – adverse effects 318.e2
Infliximab – pharmacology 318.e2
Infliximab – clinical trials 318.e2
Infliximab – off-label uses 318.e2
Infliximab – adverse effects 318.e3
Adalimumab – pharmacology and clnical trials 318.e3
Adalimumab – off-label uses 318.e3
Adalimumab – adverse effects 318.e4
TNF blockers – adverse effects 318.e4
References* 318
26 Interleukin 12/23 inhibitors 319
Introduction 319
Monoclonal antibody treatments 319
Mechanism of action – the interleukin-12/23 pathway 321
The interleukin-23 pathway (Th17 axis) 321
Targeting the interleukin-23 pathway (Th17 axis) 323
Interleukin-12/23 therapy 324
FDA approval 324
Ustekinumab 326
Pharmacology 326
Pharmacokinetics 326
Clinical use – ustekinumab 326
Efficacy 326
Adverse effects 328
Clinical trials data – ustekinumab 328
Immunological insight into biological therapy safety 329
Briakinumab 330
Pharmacology 330
Pharmacokinetics 330
Clinical use – briakinumab 330
Efficacy 330
Adverse effects 330
Clinical trials data – briakinumab 330
Considerations for interleukin treatment 330
Dosing schedules 330
Quality of life issues 331
Overview adverse effects – interleukin inhibitors 331
Infection and malignancy 331
Antibody formation and efficacy 331
The future: combination therapy and switching 331
Conclusions 331
Bibliography: important reviews and chapters 332
Pathogenesis of psoriasis 332
Ustekinumab 332
Briakinumab 332
Web References 332.e1
Psoriasis background 332.e1
Mechanisms of action – interleukin-12/23 pathway 332.e1
Mechanisms of action – interleukin-23 pathway (Th17 axis) 332.e1
Targeting the interleukin-23 pathway (Th17 axis) 332.e1
FDA approval of interleukin therapy 332.e1
Ustekinumab – pharmacokinetics, efficacy, and safety 332.e2
Immunological insights into biologic safety 332.e2
Briankinumab – pharmacokinetics, efficacy, and safety 332.e2
Considerations for interleukin treatment 332.e2
References* 332
27 Rituximab and future biological therapies 333
Introduction 333
Rituximab 333
Pharmacology 333
Structure 333
Pharmacokinetics 333
Mechanism of action 334
Clinical use 335
FDA-approved indications (Box 27-1) 335
Off-label dermatologic indications 335
Pemphigus vulgaris, pemphigus foliaceus, and paraneoplastic pemphigus 336
Epidermolysis bullosa acquisita 336
Bullous pemphigoid 336
Mucous membrane (cicatricial) pemphigoid 336
Dermatomyositis 337
Cutaneous lupus erythematosus 337
Graft-versus-host disease (acute and chronic) 337
Vasculitis 337
Primary cutaneous B-cell lymphoma 337
Contraindications 337
Warning and precautions 337
General precautions 337
Special populations 338
Adverse effects 338
General issues 338
Infusion reactions 338
Tumor lysis syndrome 338
Infections 338
Cytopenias 338
Risk of malignancy 338
Antibodies to the drug 338
Drug interactions 338
Monitoring guidelines 338
Therapeutic guidelines 338
Administration and dosing 338
Long-term therapy 339
Combination therapy 339
Biologic therapies in development or recently approved 339
References* 340
Web References 341.e1
Clinical use – general 341.e1
Pemphigus 341.e1
Other bullous dermatoses 341.e1
Autoimmune connective tissue diseases 341.e2
Graft-versus-host disease 341.e2
Vasculitis 341.e2
Primary cutaneous B-cell lymphomas 341.e2
Warnings and precautions 341.e2
Adverse effects 341.e3
Combination therapies 341.e3
Biologic therapies in development 341.e3
VII Miscellaneous Systemic Drugs 343
28 Antihistamines 343
Importance of histamine in skin diseases 343
Mast cell production of histamine 343
Histamine receptors and resultant effects 343
Antihistamine mechanism of action 344
Historical overview 344
First-generation antihistamines 344
Second-generation antihistamines 344
First-generation antihistamines 345
Pharmacology 345
Clinical use 347
Indications 347
Special points 348
Second-generation H1 antihistamines 348
Fexofenadine 348
VIII Topical Drugs for Infectious Diseases 445
36 Topical Antibacterial Agents 445
Introduction 445
Drugs used for wound care and minor topical bacterial infections 445
Bacitracin 445
Pharmacology 445
Microbiologic activity (Table 36-1) 445
Clinical use 445
Dermatologic uses 445
Adverse effects 447
Polymyxin B 448
Pharmacology 448
Microbiologic activity (Table 36-1) 448
IX Topical Immunomodulatory and Antiproliferative Drugs 487
40 Topical corticosteroids 487
Introduction 487
Pharmacology 487
Estimating TCS potency 487
Pharmacokinetics 488
Structure of the TCS molecules 488
Vehicle-related issues 490
Role of condition of skin in percutaneous absorption 490
Mechanism of action 490
General concepts 490
Anti-inflammatory effects 491
Antiproliferative and atrophogenic effects 492
Systemic effects 492
Clinical use 492
Indications 492
Atopic dermatitis 492
Discoid lupus erythematosus 493
Granuloma annulare 493
Lichen planus 493
Lichen sclerosus et atrophicus 494
Psoriasis – general approach 494
Psoriasis – scalp treatment 494
Psoriasis – combination of TCS with vitamin d products 494
Psoriasis – combination of TCS with other therapies 494
Psoriasis – effects of occlusion 494
Seborrheic dermatitis 495
Well’s syndrome 495
Bullous dermatoses 495
Erosive pustular dermatosis 495
Behçet’s disease 495
Pyoderma gangrenosum 495
Alopecia areata 495
Patch-stage cutaneous t-cell lymphoma 495
Vitiligo 495
Melasma 496
Other dermatologic uses 496
Adverse effects – systemic 496
Effects on growth and HPA axis function 496
Risk factors for systemic adverse effects 496
Tests of HPA axis function 497
TCS regimens that do not cause HPA axis suppression 497
Use of TCS in pregnancy and lactation 497
Adverse effects – local 497
General issues regarding local effects 497
Atrophy 497
Addiction/rebound syndrome and perioral dermatitis 497
Ocular effects 497
Allergic contact dermatitis due to TCS molecule 498
Tachyphylaxis 498
Other local adverse effects 499
Vehicle-related adverse effects 499
Therapeutic guidelines 499
Choosing a TCS preparation 499
Compounding using TCS 502
Supervising the TCS therapy 502
Bibliography: important reviews and chapters 504
General overviews 504
Adverse effects – overviews 504
References* 504
Web References 504.e1
Pharmacology 504.e1
Mechanisms of action – general concepts 504.e1
Mechanisms of action – anti-inflammatory effects 504.e1
Mechanisms of action – antiproliferative and atrophogenic effects 504.e1
Atopic dermatitis 504.e2
Discoid lupus erythematosus 504.e2
Granuloma annulare 504.e2
Lichen planus 504.e2
Lichen sclerosus et atrophicus 504.e2
Psoriasis – general approach 504.e2
Psoriasis – scalp treatment 504.e2
Psoriasis – combination of TCS and calcipotriene 504.e2
Psoriasis – combination of TCS with other therapies 504.e3
Psoriasis – effects of TCS occlusion 504.e3
Other inflammatory dermatoses 504.e3
Bullous dermatoses – pemphigus and pemphigoid 504.e3
Neutrophilic dermatoses – Behçet’s disease and pyoderma gangrenosum 504.e3
Alopecia areata 504.e3
Mycosis fungoides/cutaneous T-cell lymphoma 504.e3
Vitiligo 504.e3
Miscellaneous dermatoses 504.e3
Other dermatoses 504.e3
Systemic adverse effects – growth and HPA axis effects 504.e4
Risk factors for systemic adverse effects 504.e4
Local adverse effects – general issues 504.e4
Atrophy effects 504.e4
Addiction/rebound syndrome and perioral dermatitis 504.e4
Ocular effects 504.e4
Allergic contact dermatitis to TCS molecule 504.e4
Tachyphylaxis 504.e4
Other local adverse effects 504.e5
Adverse effects due to the TCS vehicle 504.e5
Therapeutic guidelines 504.e5
41 Topical retinoids 505
Introduction 505
Pharmacology 505
Structure 505
Mechanism of action 505
Teratogenicity 507
All-trans retinol and all-trans retinoic acid 507
Adapalene 509
Tazarotene 511
Bexarotene 511
Alitretinoin (9-cis retinoic acid) 512
Clinical use 512
Indications 512
Acne vulgaris 512
Actinic keratoses 514
Photoaging 514
Pigmentary disorders 514
Dysplastic nevi 515
Plaque-type psoriasis 515
Cutaneous T-cell lymphoma (CTCL) 515
Aids-related kaposi’s sarcoma 515
Wound healing and keloids 515
Striae distensae 516
Oral leukoplakia and lichen planus 516
Other dermatoses 516
Cosmeceuticals 516
Adverse effects 516
Acknowledgement 516
Bibliography: important chapters and reviews 517
Specific topical retinoids 517
References* 517
Web references 517.e1
Introduction – drug development 517.e1
Pharmacology 517.e1
All-trans retinol and all-trans retinoic acid 517.e1
Adapalene 517.e1
Tazarotene 517.e1
Bexarotene 517.e1
Alitretinoin 517.e1
Clinical use – acne vulgaris 517.e1
Actinic keratosis 517.e2
Photoaging 517.e2
Pigmentary disorders/dysplastic nevi 517.e2
Psoriasis 517.e2
Cutaneous T-cell lymphoma 517.e2
AIDS-related kaposi’s sarcoma 517.e2
Wound healing and striae distensae 517.e2
Oral leukoplakia and lichen planus 517.e3
Other dermatoses 517.e3
42 Topical and intralesional chemotherapeutic agents 518
Introduction 518
Topical chemotherapeutic agents 518
5-Fluorouracil 518
Pharmacology 518
Mechanism of action 518
Clinical use 519
Indications 519
Actinic keratoses 519
Non-melanoma skin cancer 520
Actinic cheilitis 520
Keratoacanthomas 520
Warts 520
Porokeratosis 520
Contraindications 520
Adverse effects 520
Therapeutic guidelines 520
Mechlorethamine/nitrogen mustard 521
Pharmacology 521
Mechanism of action 521
Clinical use 521
Indications 521
Mycosis fungoides – the Stanford University experience 521
Mycosis fungoides – the New York University experience 522
Mycosis fungoides – the Temple University experience 522
Contraindications 522
Adverse effects 522
Contact dermatitis 522
Induction of secondary cutaneous malignancies 522
Pigment alteration 522
Therapeutic guidelines Q42-5 522
Compounding nitrogen mustard solution 522
Compounding nitrogen mustard ointment 522
Treatment area 522
Treatment duration 523
Carmustine/BCNU 523
Pharmacology 523
Clinical use 523
Indications 523
Mycosis fungoides – study results with BCNU solution 523
Mycosis fungoides – study results with BCNU ointment 523
Contraindications 523
Adverse effects 523
Monitoring guidelines Q42-6 523
Therapeutic guidelines 523
BCNU solution 523
BCNU ointment 524
Intralesional chemotherapeutic agents 524
Vinblastine 524
X Miscellaneous Topical Drugs 551
46 Sunscreens 551
Introduction 551
Sunscreen options 551
Active sunscreen ingredients 551
UVB sunscreens 553
Padimate O 553
Octinoxate (octyl methoxycinnamate) 554
Octisalate (octyl salicylate) 554
Octocrylene 554
Ensulizole (phenylbenzimidazole sulfonic acid) 554
UVA sunscreens 554
Oxybenzone 554
Meradimate (menthyl anthranilate) 554
Avobenzone (butylmethoxydibenzoylmethane) 554
Ecamsule (tetraphthalydine dicamphor sulfonic acid) 555
Physical blockers 555
Titanium dioxide 555
Zinc oxide 555
Sunscreens pending approval 555
Clinical use 555
Indications 555
SPF level 556
UVA protection 556
Sunscreen vehicles 556
Emulsions 557
Gels 557
Sprays 557
Sticks 557
Cosmetics 557
Adverse effects 557
Subjective irritation 557
Contact urticaria 558
Irritant contact dermatitis 558
Allergic contact dermatitis 558
Photosensitivity 558
Acne induction and exacerbation 558
General photoprotection instructions for patients 558
Special patient group instructions 559
Photosensitive patients 559
Patients with sensitive skin 559
Acne-prone patients 559
Children 559
Theoretical inhibition of vitamin d synthesis 559
Sunless tanners – dihydroxyacetone 559
Summary 560
Bibliography: Important Reviews and Chapters 561
Web references 561.e1
Definitions and sunscreen options 561.e1
Clinical use 561.e1
Adverse effects 561.e1
Patient instructions 561.e1
References* 561
47 Therapeutic shampoos 562
Introduction 562
Dermatoses involving the scalp 562
Seborrheic dermatitis and related scalp conditions 562
Psoriasis 562
Lichen simplex chronicus 564
Other scalp dermatoses 564
Historical perspective 564
Pharmacology 564
Mechanism of action Q47-2 564
General properties of therapeutic shampoos 564
Keratolytic effects 564
Anti-inflammatory effects 565
Antiproliferative effects 565
Antipityrosporum effects 565
Systemic absorption 565
Clinical use 566
Indications 566
Adverse effects 566
Safety in pregnancy 566
Safety in children 566
Allergic and irritant contact dermatitis 566
Other adverse effects 567
Therapeutic guidelines 567
Application technique and frequency 567
Ketoconazole and ciclopirox 567
Selenium sulfide and zinc pyrithione 567
Salicylic acid and tar 568
Clobetasol propionate and fluocinolone acetonide 568
Chronic use of therapeutic shampoos 568
Rotational therapy 568
Adjunctive scalp therapy – topical and systemic 568
Role in tinea capitis 568
Prescription products 568
Drug interactions 568
Summary 569
Bibliography: important reviews and chapters 569
References* 569
Web references 569.e1
Introduction 569.e1
Mechanisms of action 569.e1
Systemic absorption 569.e1
Adverse effects 569.e2
Therapeutic guidelines 569.e2
48 α-Hydroxy acids 570
Introduction 570
Pharmacology 570
Structure 570
Mechanism of action 571
Epidermal effects 571
Dermal effects 571
Polyhydroxy acids effects 571
Clinical use 572
Xerosis and ichthyosis 572
Rhytides and dermatoheliosis (photoaged skin) 572
Nail disorders 574
Acne vulgaris and related conditions 574
Rosacea 574
Hyperpigmentation 574
Actinic keratoses 575
Formulations 575
Bioavailability 575
Vehicle components and AHA absorption 576
Formulation Ph and irritancy 576
Formulation Ph and dermal/epidermal effects 576
Combination products 576
Prescription versus over-the-counter status 576
Adverse effects 577
Irritancy and pigmentary changes 577
Herpes simplex infections 577
Photosensitivity versus photoprotection 577
Summary 577
Bibliography: important reviews and chapters 578
References* 578
Web References 578.e1
Pharmacology 578.e1
Clinical use 578.e1
Formulations – cosmeceutical uses 578.e1
Adverse effects 578.e1
49 Chemical peels 579
Introduction 579
Superficial chemical peels 579
α-Hydroxy acids 579
β-Hydroxy acids 579
Jessner’s solution 580
Medium-depth chemical peels 580
Combination peels 580
Monheit peel 580
Brody peel 580
Coleman peel 580
Deep chemical peels 581
Clinical use 581
Indications (Box 49-1) Q49-7 581
Melasma 581
Photoaging 581
Acne vulgaris 582
Adverse effects (Box 49-2) 582
Persistent erythema 582
Pigmentary changes 582
Milia 582
Acneiform eruptions 582
Infections 582
Scarring 582
Cardiotoxicity 582
Use in pregnancy 583
Bibliography: important reviews and chapters 583
References* 583
Web References 583.e1
Introduction 583.e1
Superficial, intermediate, and deep chemical peels 583.e1
Indications 583.e1
Cardiac toxicity 583.e1
50 Products for the care of chronic wounds 584
Introduction 584
Wound healing physiology and ideal wound healing environment 584
General approach to a patient with chronic wounds 584
Wound history 584
Past medical history 585
Past surgical history 585
Medication history 585
Social history 585
Review of systems 585
Physical examination 585
Laboratory evaluation 585
Culture 585
Imaging studies 589
Venous ulcer disease 589
Compression therapy for venous leg ulcers 589
General concepts of compression therapy 589
Unna boot plus primary dressing 590
Stretch bandages 590
Multilayer elastic bandages 590
Q50-7 Clinical trials concerning compression therapy for venous ulcers 590
Comparison between methods 590
Wound bed preparation 590
Wound care dressings used in venous ulcerations 591
Hydrocolloids 591
Foams 591
Alginates 591
Oasis 591
Apligraf 591
Periwound protectants 593
Systemic and surgical treatments 593
Pentoxifylline 593
Surgical therapy 593
Traditional surgical therapy 593
Endovascular ablation techniques 593
Growth factor therapy 593
Bibliography: important reviews and chapters 594
Treatment modalities in venous ulcers 594
Compression in venous ulcers 594
References* 594
Web References 594.e1
Introduction and wound healing 594.e1
Venous insufficiency and venous ulcers 594.e1
Compression in venous ulcers 594.e1
Wound bed preparation 594.e1
Treatment modalities in venous ulcers 594.e1
Presentation of different ulcers and treatment 594.e1
51 Agents used for treatment of hyperkeratosis 595
Introduction 595
Salicylic acid 595
Pharmacology 595
Chemistry 595
Mechanism of action 595
Keratolytic and desmolytic effects 595
Sunscreen effects 596
Anti-inflammatory effects 596
Clinical use 596
Dermatologic uses 596
Verruca and calluses 596
Scalp psoriasis and seborrheic dermatitis 596
Ichthyosis and related conditions 596
Dermatophyte infections 597
Acne 597
Psoriasis (non-scalp) 597
Use in sunscreens 597
Pruritus and pain 597
Photoaging – chemical peels 597
Hyperkeratosis 597
Hyperhidrosis 597
Adverse effects 597
Systemic absorption – salicylism 597
Systemic absorption – hypoglycemia 598
Contact allergy 598
Sulfur 598
Pharmacology 598
Chemistry 598
Mechanism of action 599
Keratolytic and keratoplastic effects 599
Antifungal effects 599
Antibacterial effects 599
Antiparasitic effects 599
Pharmacokinetics 599
Clinical use 599
Dermatologic uses 599
Acne and rosacea 599
Scabies 600
Adverse effects 600
Tar 600
Pharmacology 600
Chemistry 600
Mechanism of action 600
Antiproliferative effects 600
Other effects of tar 600
Clinical use 600
Dermatologic uses 600
Psoriasis 601
Seborrheic dermatitis 601
Use of tar in compounding 601
Adverse effects 601
Possible carcinogenesis 601
Aesthetic issues 601
Phototoxicity 601
Contact allergy 601
Other adverse effects of tar 601
Urea 602
Pharmacology 602
Chemistry 602
Mechanism of action 602
General effects of urea 602
Keratolytic and hygroscopic/humectant effects 602
Clinical use 602
Dermatologic uses 602
Xerosis and hyperkeratosis 602
Chemical nail avulsion 602
Less common uses of urea 603
Adverse effects 603
Bibliography: important reviews and chapters 603
Salicylic acid 603
Sulfur 603
Tar 603
Urea 603
Web References 603.e1
Salicylic acid – pharmacology 603.e1
Salicylic acid – clinical use 603.e1
Salicylic acid – adverse effects 603.e1
Sulfur – pharmacology 603.e1
Sulfur – clinical use 603.e2
Sulfur – adverse effects 603.e2
Tar – history and pharmacology 603.e2
Tar – clinical use 603.e2
Tar – possible carcinogenicity 603.e2
Tar – other adverse effects 603.e2
Urea – history and pharmacology 603.e2
Urea – clinical use and adverse effects 603.e2
References* 603
52 Cosmetic therapy 604
Cosmetic therapy overview 604
Skin bleaching agents 604
Hydroquinone 604
Skin pigmenting products – dihydroxyacetone 604
Facial foundations and camouflage cosmetics 605
Skin cleansers 606
Moisturizers 607
Hair shampoos 608
Hair permanent waving agents 608
Hair-straightening agents 609
Hair-dyeing agents 610
Gradual hair dyes 610
Temporary hair dyes 610
Semipermanent hair dyes 610
Permanent hair dyes 610
Hair-bleaching agents 611
Nail polish 611
Bibliography: important books 612
Web references 612.e1
Hydroquinone and mequinol 612.e1
Dihydroxyacetone 612.e1
Facial foundations/camouflage cosmetics 612.e1
Skin cleansers 612.e1
Moisturizers 612.e1
Hair shampoos 612.e1
Hair permanent waving agents 612.e1
Hair-straightening agents 612.e1
Hair-dyeing agents 612.e1
Hair-bleaching agents 612.e1
Nail polish 612.e1
53 Irritants and allergens: 613
Introduction 613
Contact dermatitis: the concept 613
Allergic contact dermatitis 613
Irritant contact dermatitis 613
When to suspect contact dermatitis 613
Regional approach 614
Empirical recommendations 614
Scalp 614
Face 614
Eyelids 614
Lips and perioral 615
Neck 616
Hands 616
Feet 616
Anogenital 617
Stasis dermatitis and chronic leg ulcers 618
Final thoughts 618
Bibliography: important reviews and chapters 619
Web References 619.e1
References* 619
54 Insect repellents 620
Introduction 620
Insect biology 620
General concepts 620
Stimuli that attract insects 620
Insect repellents overview 622
Chemical insect repellents 622
DEET 622
Formulation of available products 622
How to choose and apply DEET repellents 622
DEET concentration versus effectiveness 622
Guidelines for DEET 622
DEET and sunscreen combination products 622
Pharmacokenetics of DEET 624
Human toxicity of DEET 624
General aspects of safety profile 624
Pregnancy exposure risk 624
DEET neurotoxicity 624
DEET cardiovascular toxicity and allergic reactions 624
Large population-based DEET safety studies 624
Summary of DEET toxicity 625
Biopesticide repellents 625
IR3535 (ethyl-butylacetylaminoproprionate) 625
Piperidine (picaridin) 625
Plant-derived repellents 625
Citronella 625
Scientific testing of citronella-based products 625
Citronella candles and plants 626
Bite blocker 626
BioUD (2-undecanone) 626
Eucalyptus 626
Efficacy of DEET versus botanical repellents 626
Permethrin 627
Spectrum of protection 627
Formulations and product application 627
Related issues 628
Reducing local insect populations 628
Relief from arthropod bites 628
Bibliography: important reviews and chapters 628
Web References 628.e1
Arthropod physiology and behavior 628.e1
General issues – insect repellents 628.e1
DEET – clinical use 628.e1
DEET – pharmacokinetics 628.e1
DEET – pregnancy risk 628.e1
DEET – neurotoxicity 628.e2
DEET – cardiovascular effects 628.e2
DEET – allergic reactions 628.e2
DEET – miscellaneous articles and reviews 628.e2
Biopesticide repellents: IR3535 628.e2
Biopesticide repellents: picaridin 628.e2
Botanical insect repellents 628.e2
Permethrin insecticides (including comparison with DEET) 628.e3
Tick repellents 628.e3
Related issues – reducing local insect populations 628.e3
Related issues – relief from arthropod bites 628.e3
References* 628
55 Miscellaneous topical agents 629
Introduction 629
Topical antioxidants 629
Ascorbic acid (Vitamin C) 629
Pharmacology 629
Mechanism of action 629
Clinical use 629
Dermatologic uses 629
Photoaging 629
Photoprotection 630
Adverse effects 630
Therapeutic guidelines 630
Pregnancy prescribing status 630
Vitamin E 630
Pharmacology 630
XI Injectable and Mucosal Routes of Drug Administration 637
56 Local anesthetics 637
Introduction 637
Injectable local anesthetics 637
Lidocaine and related amide anesthetics 637
Pharmacology 637
Structure 637
Absorption 638
Bioavailability 639
Metabolism 639
Excretion 639
Mechanism of action Q56-2 639
Normal physiology of nerve conduction 639
Preventing nerve depolarization 639
Subcategories of nerve fibers 640
Clinical use 641
Fda-approved indications 641
Infiltrative anesthesia 641
Ring block 642
Regional nerve blocks 642
Off-label dermatologic uses 642
Tumescent anesthesia 642
Adverse effects 642
Toxic effects 642
Allergic reactions 643
Epinephrine effects 643
Reactions related to injection procedure 644
Drug interactions 644
Therapeutic guidelines 644
General guidelines for use 644
Use of local anesthetics during pregnancy 645
Topical anesthetics 645
Eutectic lidocaine and prilocaine (EMLA) 645
Pharmacology 645
Absorption 645
Metabolism and excretion 645
Clinical use 645
FDA-approved indications 645
Skin surgery 645
Laser surgery 646
Debridement of leg ulcers 646
Off-label dermatologic uses 646
Postherpetic neuralgia 646
Adverse effects 646
Systemic effects – methemoglobinemia 646
Other systemic effects 647
Local reactions 647
Therapeutic guidelines 647
Topical lidocaine 647
Benzocaine 647
Dyclonine 647
Other topical anesthetics – pramoxine and dibucaine 647
Co-injectable vasoconstrictors 648
Epinephrine 648
Pharmacology 648
Mechanism of action 648
Clinical use 648
FDA-approved indications 648
Hemostasis 649
Prolonging the action of local anesthetics 649
Acute hypersensitivity reactions 649
Adverse effects 649
Cardiac effects 649
CNS effects 649
Endocrinologic effects 649
Local ischemia 649
Drug interactions 650
β-Blockers 650
Tricyclic antidepressants 650
Other medications 650
Therapeutic guidelines 650
Other agents with local anesthetic effects 650
Capsaicin 650
Clinical use 650
FDA-approved dermatologic indications 650
Postherpetic neuralgia 650
Off-label dermatologic uses 651
Adverse effects 651
Drug interactions 651
Therapeutic guidelines 651
Diphenhydramine 651
Bibliography: important reviews and chapters 652
Local anesthesia 652
Topical anesthesia 652
References* 652
Web references 652.e1
Lidocaine – pharmacology 652.e1
Lidocaine – clinical use 652.e1
Lidocaine – adverse effects 652.e1
Lidocaine – drug interactions and therapeutic guidelines 652.e2
Eutectic mixture of local anesthesia (EMLA) – pharmacology 652.e2
EMLA – clinical use 652.e2
EMLA – adverse effects 652.e2
Topical anesthetics – lidocaine, benzocaine, dyclonine 652.e2
Epinephrine – pharmacology and clinical use 652.e2
Epinephrine – adverse effects 652.e3
Epinephrine – drug interactions and therapeutic guidelines 652.e3
Capsaicin – clinical use 652.e3
Antihistamines – diphenhydramine, doxepin 652.e3
57 Injectable dermal and subcutaneous fillers 653
Introduction 653
Categories of dermal fillers 653
Collagen 653
Hyaluronic acid 653
Calcium hydroxyapatite 655
Poly-l-lactic acid 655
Polymethylmethacrylate 655
Silicone 655
Fillers on the horizon 656
Adverse effects (Box 57-2) 656
Immediate adverse effects (0–2 days) 656
Early adverse effects (3–14 days) 656
Late adverse effects (15 days to 1 year) 656
Delayed (>1 year) 657
Bibliography: important reviews and chapters 657
Web references 657.e1
References* 657
58 Botulinum toxin injections 658
Introduction and history 658
Pharmacology 658
Structure and serotypes 658
Physiology of nerves 659
Mechanism of action 659
Inhibition of neuromuscular function 659
Recovery of neuromuscular function 659
Determination of botulinum activity 659
Botulinum a toxin product details 660
Clinical use 661
Patient evaluation 661
Indications 662
Overview of potential indications 662
Facial rhytides 662
Hyperhidrosis 663
Contraindications 663
Adverse effects 663
General effects 663
Antibodies to botulinum toxin 663
Adverse effects related to injection technique 664
Therapeutic guidelines 664
Injection technique – general aspects 664
Forehead injections 664
Glabella injections 664
Lateral canthus injections 664
Neck injections 665
Hyperhidrosis 665
Follow-up 665
Conclusions 665
Bibliography: important reviews and chapters 665
Web references 665.e1
Introduction & pharmacology 665.e1
Clinical use – patient evaluation 665.e1
Clinical use – indications 665.e1
Contraindications and adverse effects 665.e1
Therapeutic guidelines (see also ref. 10). 665.e1
References* 665
59 Oral mucosal therapeutics 666
Introduction 666
Review of common terminology 666
Erosive gingivostomatitis 666
Tips and clinical pearls – erosive gingivostomatitis 667
Mouth rinses 667
Topical therapy 668
Corticosteroids 668
Steroid-sparing immunosuppressants 668
Topical anesthetics 669
Intralesional corticosteroids 669
XII Major Adverse Effects from Systemic Drugs 677
60 Hepatotoxicity of dermatologic drug therapy 677
Introduction 677
The liver and drug metabolism 677
Hepatic drug metabolism 677
Polymorphisms 678
Mechanisms of drug hepatotoxicity 679
General mechanisms involved 679
Toxic versus idiosyncratic reactions 680
Risk factors for drug hepatotoxicity 681
General risk factors 681
Drug-specific risk factors 681
Predictive testing for polymorphisms 682
Drug information dissemination issues 682
Limits of clinical trials in predicting hepatotoxicity 682
Risk with real world drug use 682
Potential predictors of hepatotoxicity 682
Importance of disseminating of drug safety information 682
Classification systems (Table 60-7) 683
Drug etiologies 684
Common dermatologic drug etiologies 684
Less common drug etiologies 684
Diagnosis 684
Diagnostic algorithm 684
Differential diagnosis 685
Referral criteria 685
Liver ‘function’ tests 685
Management 686
Background issues 686
Management options 686
Looking to the future – lessons from the past 687
Bibliography: important reviews and chapters 688
General overviews 688
General mechanisms of hepatotoxicity 688
Liver ‘function’ tests 688
Psoriasis and methotrexate-induced liver disease 688
References* 689
Web references 689.e1
Introduction 689.e1
The liver and drug metabolism 689.e1
Mechanisms of drug hepatotoxicity 689.e1
Risk factors for drug hepatotoxicity 689.e1
Drug information dissemination/ drug withdrawal 689.e1
Causality assessment 689.e1
Liver ‘function’ tests 689.e2
61 Hematologic toxicity of drug therapy 690
Introduction 690
General principles 690
Mechanisms of hematologic toxicities 690
Timing of hematologic toxicity 691
Prediction of risk for hematologic toxicities 691
Major categories of drug-induced hematologic toxicity 691
Agranulocytosis 691
Aplastic anemia (pancytopenia) 692
Thrombocytopenia 692
Neoplasia 693
Drugs Prescribed by Dermatologists – Risk of Hematologic Toxicity 693
Methotrexate 693
Mechanism of toxicity 693
General risk of hematologic toxicity 694
XIII Special Pharmacology and Therapeutic Topics 757
67 Pharmacoeconomics 757
Introduction 757
Various cost analyses 757
Cost-minimization analysis Q67-1 757
Cost–benefit analysis 757
Cost-effectiveness analysis 758
Cost–utility analysis 758
‘Forgotten’ and indirect costs of therapy 759
Analyzing the various cost analyses 759
Comparison of four primary cost analysis methods 759
General principles for using these cost analysis methods 759
Areas of controversy 760
How are pharmacoeconomic analyses used? 760
Formulary decisions 760
‘Negotiations’ with patients and insurers 761
Evaluating pharmaceutical company trials 761
Current trends in drug prices 762
Physician role in drug cost control 763
Pharmaceutical pricing strategies 763
Three basic pricing strategies 763
Average wholesale price 763
Wholesale acquisition cost 763
Pharmaceutical manufacturer costs 763
Pharmaceutical patient assistance programs 763
Generic drugs and substitution 764
Why is pharmacoeconomics important to clinicians? 764
Bibliography: important reviews and chapters 764
References* 764
Web References 765.e1
Introduction 765.e1
Cost analysis methods 765.e1
Assessing the various cost analysis methods 765.e1
How are pharmaceutical cost analyses used 765.e1
Pharmaceutical company pricing strategies 765.e1
68 Informed consent and risk management 766
Introduction 766
Historical perspective 766
Ethical perspective 766
Basic legal principles 767
Components of informed consent 768
Systemic drugs and informed consent 768
Optimizing patient understanding 769
Exceptions to the informed consent requirements 769
Medicolegal risk management 769
Appendix I – Ten drugs of increasing importance to dermatology 787
Newer drugs 787
Older drugs 787
Newer melanoma chemotherapy drugs covered elsewhere in the book 787
Bibliography – BELIMUMAB 787
Bibliography – CANAKINUMAB 788
Bibliography – ICATIBANT 788
Bibliography – INGENOL MEBUTATE 789
Bibliography – VISMODEGIB 789
Bibliography – BIMATOPROST 790
Bibliography – OMALIZUMAB 790
Bibliography – OXYBUTYNIN 791
Appendix II – Dapsone patient education and informed consent 792
Disease being treated with dapsone 792
Boxed warnings – most serious risks from the drug 792
Contraindications – reasons you can possibly not take this drug 792
Dapsone use in pregnancy 792
Possible drug interactions 792
Most important side effects – report these findings to doctor right away 792
Common side effects – of less concern 792
Rare, but important to report to doctor 792
Laboratory testing 792
Subject Index 793
A 793
B 797
C 798
D 802
E 805
F 806
G 807
H 807
I 809
J 811
K 811
L 811
M 813
N 814
O 815
P 816
Q 820
R 820
S 821
T 823
U 825
V 825
W 826
X 826
Z 826