Dermatology
Dermatology addresses conditions affecting the skin, hair, and nails.
- Acne — comedonal, inflammatory, cystic, isotretinoin
- Actinic Keratosis — precancerous lesion, UV damage, field cancerization, 5-FU, PDT
- Alopecia — alopecia areata, androgenetic, JAK inhibitors, minoxidil
- Basal Cell Carcinoma — most common skin cancer, Mohs surgery, hedgehog pathway
- Bullous Pemphigoid — autoimmune blistering, BP180/BP230 antigens, elderly, steroids
- Calciphylaxis — vascular calcification, CKD association, painful skin necrosis
- Cellulitis — bacterial skin infection, Group A Strep/Staph aureus, MRSA, lymphedema risk
- Contact Dermatitis — irritant vs. allergic, nickel, urushiol, patch testing
- Dermatitis Herpetiformis — celiac-linked, IgA deposits, gluten-free diet
- DRESS Syndrome — drug reaction, eosinophilia, systemic symptoms, life-threatening
- Eczema — atopic dermatitis, barrier dysfunction, biologics
- Epidermolysis Bullosa — genetic blistering, fragile skin, wound care, gene therapy
- Erysipelas — superficial cellulitis, Group A Strep, well-demarcated erythema, penicillin
- Folliculitis — hair follicle infection, Staph/Malassezia/Pseudomonas, razor bumps, MRSA
- Erythema Nodosum — tender nodules, anterior shins, reactive panniculitis, systemic causes
- Fungal Infections — dermatophytes, candidiasis, antifungal therapy
- Hidradenitis Suppurativa — follicular occlusion, Hurley staging, adalimumab, biologic therapy
- Impetigo — Staph/Strep, honey-crust lesions, mupirocin, contagious
- Lichen Planus — purple polygonal papules, 6 P's, Wickham striae, oral involvement
- Lichen Sclerosus — white atrophic plaques, anogenital, SCC risk, potent topical steroids
- Linear IgA Bullous Dermatosis — drug-induced or idiopathic blistering, IgA deposits, dapsone
- Livedoid Vasculopathy — painful ulcers, fibrin thrombi, lower legs, anticoagulation
- Melanoma — ABCDE rule, BRAF mutation, immunotherapy, staging, sun protection
- Morphea — localized scleroderma, skin sclerosis, methotrexate, phototherapy
- Mycosis Fungoides — cutaneous T-cell lymphoma, patch-plaque-tumor stages, skin-directed therapy
- Pemphigoid Gestationis — pregnancy blistering, autoimmune, BP180 antibodies, corticosteroids
- Pemphigus Vulgaris — mucosal blistering, desmoglein antibodies, rituximab, high mortality if untreated
- Pityriasis Rosea — herald patch, Christmas tree pattern, HHV-6/7, self-limiting
- Porphyria Cutanea Tarda — skin fragility, blistering, iron overload, phlebotomy, hydroxychloroquine
- Psoriasis — plaque, guttate, biologic therapy, phototherapy
- Pyoderma Gangrenosum — ulcerating, pathergy, IBD association, ciclosporin, biologics
- Rosacea — erythematotelangiectatic, papulopustular, phymatous
- Scabies — Sarcoptes scabiei mite, permethrin, ivermectin, household decontamination
- Scleroderma (Systemic Sclerosis) — autoimmune fibrosis, Raynaud's, limited vs diffuse, ILD, renal crisis
- Seborrheic Dermatitis — Malassezia yeast, dandruff, cradle cap, ketoconazole
- Skin Cancer — basal cell, squamous cell, melanoma, ABCDE rule, Mohs surgery
- Squamous Cell Carcinoma — second most common skin cancer, Mohs, cemiplimab, UV damage
- Stevens-Johnson Syndrome — drug reaction, mucocutaneous necrosis, ICU, life-threatening
- Urticaria (Hives) — acute vs. chronic spontaneous, omalizumab, antihistamine stepwise therapy
- Vitiligo — melanocyte destruction, autoimmune, JAK inhibitors, phototherapy
- Warts — HPV types, common/plantar/flat/genital, salicylic acid, cryotherapy, immunotherapy