Derm 4 - Common Skin Disorders (Crane) Flashcards
Autoimmune attack on melanocytes
Vitiligo
- well-circumscribed depigmentation
To determine between hypopigmented or depigmented use:
Wood’s light
Common inflammatory reaction to Malassezia yeast on oil-producing skin (scalp, hairline, eyebrows, eyelids, central face, nasolabial folds, ext auditory canals, CENTRAL CHEST)
Seborrehic dermatitis
- erythematous scaling macules, hypopigmented
- worse in HIV+
Hypopigmented patches on upper back & chest should be scraped for KOH exam to rule out
Tinea versicolor
Hypopigmented patches on central face w/ greasy scale
seborrheic dermatitis
Potent corticosteroids can cause
Hypopigmentation
Brown or blue/grey hyperpigmentation of skin, alveolar ridge, palate, sclera. Which drug causes this?
Long-term minocycline
- discontinue if on gums or sclerae
Meds that cause hyperpigmentation
Amiodarone Antimalarials CCBs Zidovudine Imipramine Some chemo drugs
Eczematous eruption that occurs in venous insufficiency and leg edema
- Venous ulcers may result, esp on medial malleolus
Stasis dermatitis
Stasis dermatitis tx
Compression, elevation
Mild topical steroids
AVOID topical abx - half develop allergic contact dermatitis esp to neomycin and bacitracin
Pigment of tinea versicolor
Hyperpigmented
Symmetric brown patches on zygomatic, buccal, and mandibular cheeks of adult women
Melasma
Psoriasis: lesions located in skin folds
Inverse/Flexural Psoriasis
Psoriasis: present with drop lesions, 1-10 mm salmon-pink papules with fine scale
Guttate Psoriasis
Psoriasis: generalized edema covering nearly entire body surface w/ varying degrees of scaling
Erythrodermic Psoriasis
