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Ординатура / Хирургия / Библиотека им академика М.И. Перельмана / Книга_2758_Библиотеки_им_академика_М_И_Перельмана

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Index
https://t.me/medicina_free
A
Acetaminophen, 147 Acneiform, 304 Acneiform eruption, 307 Acute generalised exanthematous pustulosis (AGEP), 47,
48, 58, 59, 106, 324, 325 clinical features, 129, 130 culprit drugs, 128 differential diagnosis, 130, 131 epidemiology, 127 history, 127 investigations, 131 management, 131 pathology, 128 pathophysiology, 127, 128
Acute localised exanthematous pustulosis (ALEP), 129 Acute skin failure, 117 ALgorithm of Drug causality for Epidermal Necrolysis
(ALDEN), 112
Allopurinol, 138 Alopecia, 305 Alopecia areata, 139 Altered peptide repertoire model, 38, 113 Altered TCR repertoire model, 48, 49 American Society of Clinical Oncology (ASCO), 318 Amide drugs, 182 Amiodarone, 249, 250 Amlodipine, 250 Anakinra, 290 Angioimmunoblastic T-cell lymphoma, 139 Angiotensin converting enzyme (ACE), 90, 91 Angiotensin converting enzyme inhibitors (ACEi), 96,
97, 219, 220
Angiotensin II receptor antagonists (ARBs), 97 Anti-CD20 drugs, 157 Anticonvulsant hypersensitivity syndrome, 133 Antigen-presenting cells (APC), 36–38 Anti IgE (Omalizumab), 293, 294 Anti-IL 4/13 (Dupilumab), 290, 291 Anti IL12/23 inhibitor (Ustekinumab), 293 Anti IL23 inhibitor (Guselkumab), 293 Anti-programmed cell death-1 (PD-1) inhibitors, 254, 255 Antithyroglobulin antibodies, 138 Antithyroid peroxidase, 138 Apparent leukonychia, 231
Aromatic antiepileptic drugs (AEDs), 12–20 Arthralgia, 168 Autoimmune bullous diseases
diagnosis of, 181 intraepidermal blistering diseases, 181 subepidermal blistering diseases, 181
B
Baboon syndrome, 106 Basophil activation test (BAT), 78, 79, 269 Beau’s lines, 231 Benralizumab, 291 Benzylpenicillin (BP), 264 Beta-adrenoreceptors, 160 Beta-lactams (BLs)
allergy, 263 chemical structure, 264–265 clinical history, 267 clinical manifestations, 266, 267 consumption and sensitization, 263, 265, 266 determinants and highest concentrations, 268 drug provocation test (DPT), 268 immediate (IRs) and non-immediate reactions
(NIRs), 263 immunospot assay (ELISpot), 270 in vitro tests, 268, 269 lymphocyte transformation test (LTT), 269, 270 skin testing, 267, 268
Birmingham Vasculitis Activity Score (BVAS), 174 Bleomycin, 250 Blue lunula, 231 Boston Collaborative Drug Surveillance, 212 Bradykinin, 91 Brown grading system, 296 Bullous eruptions, 323, 324
C
Canakinumab, 290 Carbamazepine (CBZ)
HLA-A*31:01 allele, 11 HLA-B*15:02 allele, 6, 11 HLA-B*57:01 allele, 11 HLA-B*59:01 allele, 12
© Springer Nature Switzerland AG 2022 H. Y. Lee, D. Creamer (eds.), Drug Eruptions, Updates in Clinical Dermatology,
https://doi.org/10.1007/978-3-031-09388-3
331
332
https://t.me/medicina_free
Index
Carbamazepine (CBZ) (cont.)
indications, 6 metabolism of, 6
T cell receptor variation, 7–10, 12 Cardiac involvement, 138 Cemiplimab, 319 Cephalosporins, 264 Chapel Hill vasculitis consensus criteria, 173 Chemical-induced leukoderma, 255 Chemotherapy-induced alopecia (CIA)
anagen efuvium, 239
cytotoxic chemotherapy, 239
degree of alopecia, 239
persistent (permanent) CIA (pCIA), 240
prevention and treatment, 239, 240
risk factors, 239 Cholestatic liver injury, 218 Chronic spontaneous urticaria (CSU), 95 Ciclosporin, 140 Clavulanic acid (CLV), 265 Clinically amyopathic DM (CADM), 170 Common Terminology Criteria for Adverse Events
(CTCAE), 177, 318 Corticosteroid, 139, 140 Cross-reactions, 71 Cutaneous adverse drug reactions (CADRs), 105, 107,
108, 153
AGEP, 58, 59 differential diagnosis, 61, 62 DRESS, 57, 58 drug-induced exanthem, 56, 57 FDE, 60, 61 inammatory patterns
interface dermatitis pattern, 54, 55
spongiotic reaction pattern, 53, 54 non-specic histological aspects, 55, 56 SDRIFE, 61 SJS/TEN, 59, 60
Cutaneous blisters, 158 Cyclophosphamide, 140, 250 Cysteinyl leukotrienes, 90 Cytochrome P450 enzymes, 159 Cytokine release syndrome, 284 Cytotoxic T lymphocytes (CTL), 38
D
Dacomitinib, 305 Dermatomyositis (DM), 170 Diarrhoea, 138 Diltiazem-induced hyperpigmentation, 249 Dipeptidyl peptidase-IV inhibitors (DPP4i), 185 Direct immunouorescence (DIF), 159 Drug hypersensitivity (DH)
abacavir, 4, 5 AEDs, 12–20 allopurinol, 21–23 carbamazepine
HLA-A*31:01 allele, 11
HLA-B*15:02 allele, 6, 11
HLA-B*57:01 allele, 11 HLA-B*59:01 allele, 12
indications, 6 metabolism of, 6 SmPC, 12
T cell receptor variation, 7–10, 12 clinical presentation, 36 dapsone, 23, 24 delayed reactions (see T cells mediated DH) evidence and guidelines, 27 Gell and Coombs’s criteria, 35, 36 genetic factors
abacavir, 42
allopurinol, 41
aromatic anticonvulsants, 41, 42
ethnicity-specic, 39–41
in immediate-type drug hypersensitivity, 38
pharmacogenomic associations, 42
screening, 38 hapten/prohapten model, 26 human leukocyte antigen (HLA) B*57:01, 4, 5 immediate-type reactions, 43, 44 nevirapine, 24, 25 phenytoin, 26 SCARs, drug metabolism, 42 TCR repertoire, 48, 49 trimethoprim–sulfamethoxazole, 24 vancomycin, 25
Drug hypersensitivity reaction (DHR)
delayed reactions
ELISA, 81–83
ELISpot, 81–83
ow cytometric analysis, 80, 81
LPA, 79, 80
LTT, 79, 80
phenotype, 79, 80
tests, 79, 80 immediate reactions
acute phase mediators, 76, 77
BAT, 78, 79
immunoassays, 77, 78 phenotypes, 75, 76
Drug-induced acneiform eruptions
clinical features, 199, 200 differential diagnosis, 199 management, 199 pathophysiology, 199
Drug-induced bullous pemphigoid (DIBP)
clinical presentation/investigations, 184 drug causality, 184–186 drug-triggered BP, 184 pathophysiology, 184
Drug-induced exanthem, 56, 57 Drug-induced lupus erythematosus (LE)
causative agents, 166 diagnosis, 170 medication-triggered group, 168
Drug-induced photosensitivity
clinical investigations, 206, 207 clinical presentation, 205, 206
Index
https://t.me/medicina_free
333
epidemiology, 203 management, 208 medications, 203 NSAIDs, 208 pathogenesis, 203, 204 photocarcinogenic risks, 208 photocontact allergy, 207 photosafety investigations, 207 phototherapy, 208 potential consequences, 208 PUVA, 208 systemic drug phototoxicity, 204, 205
wavelength dependency, 206 Drug-induced pityriasis rosea (PR)-like reactions, 194–195 Drug-induced pruritus
acute form, 212
angiotensin-converting enzyme (ACE) inhibitors,
219, 220 anti-cancer therapies, 218, 219 calcium channel blockers, 212 chloroquine, 217, 218 cholestatic liver injury, 218 chronic form, 212 denition, 211 diagnosis, 220 direct drug-induced pruritus, 212 drug-induced itch, 212 Group I, 211 Group II, 211 Group III, 211 hydroxyethyl starch (HES), 218 indirect drug-induced pruritus, 212 itch pathway, 213 nephrotoxic drugs, 212 opioids, 214, 217 prevalence, 211, 212 treatment, 220, 221
Drug-induced urticaria (DIU)
ACEi, 96, 97 aspirin, 95, 96 causes, 95 clinical features, 89 clinical history, 92 H1-antihistamines, 98 immunologically mediated reactions
IgE antibody-dependent reactions, 90
immune complex, 90, 91 iniximab, 98 in vitro testing, 92–94 in vivo testing, 94 management of, 94, 95 non-immunological reactions
direct mast cell degranulation, 90, 91
interference, 90, 91
kinin-mediated angioedema, 90, 91 NSAIDs, 95, 96 opiates, 96 sorafenib, 98 spontaneous reports, 95
Drug-induced vasculitis (DIV)
adverse drug reactions, 174 antibiotics, 175 anti-TNF-a agents, 175–176 cancer immunotherapy, 177, 178 clinical features, 174 cocaine/levamisole, 177 diagnosis of, 174, 175 EULAR guidelines, 174 life-threatening manifestations, 174 management, 175 pathogenesis, 178 prescribed drugs, 176 prevalence of, 173
propylthyrouracil (PTU), 176, 177 Drug patch tests, 149 Drug provocation tests (DPT), 94, 279, 280 Drug reaction with eosinophilia and systemic symptoms
(DRESS), 43, 45, 57, 58, 106, 107, 130, 197,
292, 325 clinical features, 135–138 denition, 133 differential diagnosis, 139 drug causality, 134 epidemiology, 133, 134 histopathology, 138, 139 history, 133 long-term sequelae, 139 pathophysiology, 134, 135 prognosis and management, 139, 140
Drug skin tests
for immediate drug eruptions, 66, 67 lesional skin tests, 71 for nonimmediate drug eruptions, 67–71 photopatch tests, 71
Dry skin (xerosis), 308–309
E
Eczematous dermatitis, 291 Eczematous reactions, 197, 198 Effector T lymphocytes (Teff), 135 Encephalitis, 138 Endocrine, 138 Endoplasmic reticulum aminopeptidase 1 (ERAP1), 4 Enzyme-linked immunosorbent assay (ELISA), 81–83 Enzyme-linked immunospot (ELISpot), 81–83 Eosinophilia, 137 Epidermal detachment, 111, 118, 119 Epidermolysis bullosa acquisita (EBA), 187 Erythema multiforme (EM), 138 Erythema nodosum, 195, 196 EudraVigilance database, 185 European Society for Medical Oncology (ESMO), 318 Exanthematous drug reactions
causative agents, 107 clinical features, 105–107 diagnosis, 107, 108 epidemiology, 105 management, 108, 109 pathogenesis, 103, 104
334
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Index
Exfoliative dermatitis, 139 Exfoliative erythroderma, 136 Extracorporeal Membrane Oxygenation (ECMO), 140
F
Facial erythema, 291 Facial oedema, 136, 137 Fas/Fas ligand, 145 Fixed drug eruption (FDE), 60, 61
characterization, 143 clinical investigations, 149 clinical presentation, 145–147 culprit drugs, 147, 148 differential diagnosis, 147 epidemiology, 143, 144 histopathology, 144, 145 history, 143 management, 150 pathomechanism, 145
prognosis, 148, 149 Flagellate pigmentation, 250 Fluoroenzyme immunoassay (FEIA), 77 5-Fluorouracil, 250
G
Generalized bullous xed drug eruption (GBFDE), 143
clinical investigations, 149
clinical presentation, 145–147
culprit drugs, 147, 148
differential diagnosis, 147
epidemiology, 143, 144
histopathology, 144, 145
management, 150
pathomechanism, 145
prognosis, 148, 149 Giant cell lichenoid dermatitis, 159 Granuloma annulare (GA), 193 Granulysin, 113, 120 Graves’s disease, 138
H
Haemophagocytic syndrome, 137 Hair changes, 305, 309
anti-oestrogen therapy, 244
anti-TNFα therapies, 241
chemotherapy-induced alopecia (CIA), 239
anagen efuvium, 239 cytotoxic chemotherapy, 239 degree of alopecia, 239 persistent (permanent) CIA (pCIA), 240
prevention and treatment, 239, 240 clinical assessment, 238 cycle of growth and renewal, 238 drug-induced hair colour and texture changes, 245 drug-induced hair loss, 237 EGFR inhibitors, 241 growth problems, 237
hair follicle, 238 hair loss, 237 hirsutism, 244 hormone effects, 243, 244 hypertrichosis, 244, 245 immune checkpoint inhibitors, 243 targeted oncology therapies, 241 telogen efuvium, 238, 239 trichomegaly, 245
tyrosine kinase inhibitors and hair pigmentation, 243 Hand-foot skin reaction (HFSR), 305, 310 Hapten–prohapten theory, 38 Hashimoto’s thyroiditis, 138 Hedgehog signaling pathway inhibitors (HhSPi), 312 Hidradenitis suppurativa (HS), 289 Hirsutism, 244 Histamine, 90 Histamine liberators, 91 Histamine release test (HRT), 269 Human leucocyte antigen (HLA), 6, 11, 12, 36, 38, 159
See also Drug hypersensitivity (DH) Hydroxychloroquine (HCQ), 130 Hydroxyethyl starch (HES), 212, 218 Hydroxyurea, 250 Hyperpigmentation, 247 Hypertrichosis, 244, 245 Hypopigmentation, 247, 248
I
Ig-E bound high-afnity Fc receptor (FcεRI), 43 IgE mediated DH, 43, 44 IgE mediated reactions, 284 IgG mediated reactions, 284, 285 IL-36 receptor antagonist, 47, 128 Immediate-type drug hypersensitivity reactions, 38 Immune checkpoint inhibitors (ICIs), 158
atezolizumab, 319
avelumab, 319
cemiplimab, 319
combination CTLA-4-PD-1 inhibition therapy, 320
CTLA-4 or PD-L1/PD-1 interactions, 318
cutaneous irAE
bullous eruptions, 323, 324 lichenoid eruptions, 322, 323 morbilliform eruption, 321 pruritus, 320, 321 SCARs, 324, 325
vitiligo-like depigmentation, 323 dermatological adverse effects, 325 durvalumab, 319 granulomatous reactions, 326 immune-related adverse events (irAEs), 318 immunotherapy drugs, 318 ipilimumab, 318, 319 lichenoid eruptions, 321, 322 nivolumab, 319 pembrolizumab, 319 rheumatoid arthritis (RA), 326 T-cell activation, 317
Index
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335
Immunoglobulin E antibodies (IgE), 76 Immunospot assay (ELISpot), 270 Injection site reactions (ISRs), 284 Interferon-gamma (IFN-γ), 43 Interleukin-8 (IL-8), 127 Interleukin 17 inhibitors, 292, 293 Interstitial granulomatous drug reaction (IGDR),
191–192 Intradermal tests (IDT), 66, 67, 69–71, 94 In vitro tests
drug hypersensitivity reaction (see Drug
hypersensitivity reaction (DHR))
pathomechanisms, 75 utility of, 83, 84
Ipilimumab, 318, 319
K
Keratinocyte necrosis, 117 Keratinocyte proliferation, 305
L
Lemavisole, 178 Lesional skin tests, 71 Lichenoid drug eruptions (LDE), 321–323
characterisation, 153 clinical feature, 153–155, 158 drug causality
biologics, 155, 157 immune checkpoint inhibitors, 158 implication, 155, 156 photodistributed and oral mucosal, 155, 157
vaccines, 155 epidemiology, 153 histological feature, 153–155, 158, 159 identication, 153 pathogenesis, 159, 160 treatment, 160
Lichenoid nail changes, 231 Lichen planus (LP), see Lichenoid drug eruptions
(LDE)
Linear IgA bullous dermatosis (LABD)
clinical presentation, 186 drug causality, 186, 187 IgA autoantibodies, 186 pathophysiology, 186
Liver function, 137 Longitudinal melanonychia, 231 Lupus erythematosus (LE)
causative agents, 165 culprit drugs, 166 diagnosis
differential diagnosis, 169
serological prole, 169 drug-induced SCLE, 168, 169 drug-induced SLE, 168 epidemiology, 165 management, 170 medication-triggered group, 168
pathogenetic mechanisms, 165 pathophysiology
adaptive immunity, 167 genetic susceptibility, 167 hydralazine, 167 innate immunity, 167, 168
procainamide, 167 Lymphocyte proliferation assay (LPA), 79, 80 Lymphocyte transformation test (LTT), 79, 80, 149, 269,
270
Lymphocytosis, 137
M
Maculopapular exanthema (MPE), 43 Maculo-papular rash, 56, 57 Meningitis, 138 Methotrexate (MTX), 193 Minimal erythema dose (MED), 71 Minocycline, 251 Morbilliform, see Exanthematous drug reactions Morbilliform eruption, 305, 321 Morbilliform erythema, 136 Mucosal involvement, 154 Mucositis, 309 Muehrcke’s lines, 230
N
N-acetylcysteine, 140 Nail bed, 230–231 Nail changes, 309
Beau’s lines, 228 culprit drug, 230 exogenous pigment deposition, 229 inammatory cutaneous drug reactions, 227 lunula pigmentation, 229 management principles, 232 Mees lines, 228 microvascular damage, 230 morbidity, 227 Muehrcke’s lines, 230 nail anatomy, 227, 228 nail bed, 230–231 nail fold, 230 nail matrix melanocytes, 231–232 nail plate/matrix, 231 Naranjo’s algorithm, 230 onycholysis, 229, 230 psoriatic and lichenoid drug reactions, 228 Raynaud’s phenomenon, 230
skin and mucosal pigmentary changes, 229 Nail fold, 230 Nail matrix melanocytes, 231–232 Naranjo’s algorithm, 230 Nature killer (NK) cells, 45–47 NETosis, 167 Neutrophilic panniculitis, 196, 197 Nikolsky’s sign, 181 Nivolumab, 319
336
https://t.me/medicina_free
Index
Non-steroidal anti-inammatory drugs (NSAIDs), 95,
96, 107, 147 Notoriety, 134 NSAID-exacerbated cutaneous disease (NECD), 95 NSAID-induced urticaria (NIU), 95
O
Off-target inammatory cutaneous eruptions, 285 Onycholysis, 229, 230 Onychomadesis, 231 Overlap syndromes, 139
P
Paronychia, 304 Patch tests (PaT), 67–71 Pembrolizumab, 319 Pemphigus
clinical features, 182 desmosomal components, 182 drug causality and pathophysiology, 182–183 genetic and environmental predisposing factors, 182
Nikolsky’s sign, 181 Perforin/granzyme B, 145 Pharmacogenetics
challenges, 3, 4
development, 3 Phenolic drugs, 182 Phenothiazines, 252 Photodistributed and oral mucosal lichenoid drug
eruption, 157 Photo-onycholysis, 231 Photopatch tests, 71 Pigmentary disorders
clinical presentation, 248 differential diagnosis, 248 hyperpigmentation, 247, 253
analgesics, 249 antimalarials, 249 antimicrobial agents, 251–252 cardiac drugs, 249, 250 chemotherapeutic agents, 250 heavy metals, 252
psychotropic agents, 252, 253 hypopigmentation, 247, 248, 254–256 incidence of, 247 tyrosine kinase inhibitors (TKI), 256
Plasmapheresis, 140 Platelet activating factor (PAF), 43, 90 Post-pustular desquamation, 129, 131 Pruritus, 308–309, 320, 321 Psoriasiform dermatitis, 290 Psoriatric nail changes, 231
R
Radioallergosorbent test (RAST), 77 Radio contrast media (RCM) hypersensitivity reactions
allergic and non-allergic, 275
allergological workup, 276, 277, 280 classication, 275 clinical manifestations, 276 drug provocation test (DPT), 279, 280 epidemiology and risk factors, 275, 276 immunoglobulin E (IgE)-mediated allergic
mechanism, 276 laboratory tests, 279 NIHRs, 276 skin tests, 277, 279 toxic reactions, 275
Rash, 136 Raynaud’s phenomenon, 231 RegiSCAR scoring system, 135, 139 Regulatory T lymphocytes (Treg), 135 Renal involvement, 138 Reslizumab, 291 Respiratory tract, 138 Rheumatoid arthritis (RA), 193, 326 Rhododendrol, 255 Rituximab, 140
S
Sarcoidosis, 192 Scarring alopecia, 158 Scleroderma, 171 SCORTEN score, 117, 119 Scottish Photobiology Service, 204 Serum drug-specic IgE (sIgE), 77, 78 Serum sickness like reactions (SSLR), 285 Severe cutaneous adverse drug reactions (SCARs), 42,
143, 145
Sick euthyroid syndrome, 138 Skin prick tests (SPT), 66, 67, 94 Sneddon-Wilkinson disease, 130 Splinter hemorrhages, 231 Stevens–Johnson syndrome/toxic epidermal
necrolysis (SJS/TEN), 59, 60, 136, 139,
324, 325 annexin A1, 45–47 clinical presentation, 114–117 cytokines/chemokines, 45–47 Fas-Fas ligand (FasL) binding, 45–47 granulysin, 45, 46 immunomodulatory approaches, 119 intradermal tests and drug provocation tests, 120 in vitro tests, 120 long-term follow-up, 120 management and treatment, 117 medication risk, 111, 112 NK cells, 45–47 pathophysiology, 112, 113 perforin and granzyme B pathway, 45, 46 prevention of, 120, 121 skin and mucous membranes, 118, 119 supportive care, 117, 118
Subcorneal pustular dermatosis, 130 Summary of Product Characteristics (SmPC), 12 Sweet’s syndrome, 194
Index
https://t.me/medicina_free
337
Symmetrical drug-related intertriginous and exural
exanthem (SDRIFE), 61, 106 Systemic hypersensitivity reactions, 284 Systemic involvement, 137
T
Targeted biologic agents
anakinra, 290 anti-CD-20 (Rituximab)
hypersensitivity reactions, 289, 290
off-target inammatory cutaneous eruptions, 290 anti IgE (Omalizumab), 293, 294 anti-IL 4/13 (Dupilumab), 290, 291 anti-IL-5, 291 anti-IL-6 (Tocilizumab), 291, 292 anti IL12/23 inhibitor (Ustekinumab), 293 anti IL23 inhibitor (Guselkumab), 293 anti-tumour necrosis factor-α agents (Anti-TNFs)
cutaneous vasculitis, 289
eczematous reactions, 288
granulomatous reactions, 288
hidradenitis suppurativa (HS), 289
iniximab-related infusion reactions, 286
local injection site reactions (ISRs), 286
lupus-like reactions, 288
off-target inammatory cutaneous eruptions, 287
psoriasis/psoriasiform eruptions, 287, 288 canakinumab, 290 immediate hypersensitivity reactions
cytokine release syndrome, 284
IgE mediated reactions, 284
IgG mediated reactions, 284, 285 injection site reactions (ISRs), 284 interleukin 17 inhibitors, 292, 293 monoclonal antibodies (mAbs), 283
acute management, 294
Brown grading system, 296
challenge test, 297
desensitisation protocol, 296, 297
diagnostic evaluation, 296
local/injection site reactions, 294
non-irritating concentration for skin tests, 296
off-target inammatory cutaneous eruptions, 295
premedication, 297 non-immediate hypersensitivity reactions
delayed type IV reactions, 285
serum sickness like reactions (SSLR), 285 off-target inammatory cutaneous eruptions, 285 systemic hypersensitivity reactions, 284
Targeted therapy
adverse effects, 303 BRAF inhibitors (BRAFi), 311 classication, 303, 304 clinical features
acneiform eruption, 307
EGFRi, 306
hair changes, 309 mucositis, 309 nail changes, 309
pruritus and dry skin (xerosis), 308–309 denition, 303 epidemiology, 304, 305 hand-foot skin reaction (HFSR), 310 Hedgehog signaling pathway inhibitors (HhSPi), 312 KIT inhibitors (KITi), 312 mammalian target of rapamycin inhibitors (mTORi),
311 MEK inhibitors (MEKi), 311 multi-kinase inhibitors (MKi), 310 pathophysiology, 305, 306 prognosis, 312 symptomatic and preventive treatments, 312, 313
T cell receptor (TCR), 48, 49, 113 T cells mediated DH
AGEP, 47, 48 DRESS, 43, 45 MPE, 43 SJS/TEN
annexin A1, 45–47 cytokines/chemokines, 45–47 Fas-Fas ligand (FasL) binding, 45–47 granulysin, 45, 46 NK cells, 45–47
perforin and granzyme B pathway, 45, 46 Telogen efuvium, 238, 239 Thin brittle nails, 231 Thiol drugs, 182 Thyroid dysfunction, 139 Thyroiditis, 138 Tocilizumab, 291, 292 Transverse melanonychia, 231 Trichomegaly, 245 Tricyclic antidepressants, 252 True transverse leukonychia, 231 Type I hypersensitivity reaction, 90, 91
U
Ultraviolet radiation (UVR), 160
V
Valganciclovir, 140 Vismodegib, 305 Vitiligo-like depigmentation, 323
W
Wickham’s striae, 153
Y
Yellow discolored nails, 231