MKSAP Derm IV Flashcards
When is a Tzank (or Giemsa) preparation used for?
When skin findings are concerning for HSV
What can Wood lamp be used for
- Vitiligo- bright white and sharply delineated
- Erythramsa- fluoresces coral pink
- Urine fluorescence in porphyria cutanea tarda
Erythematous annular patches with noticeable surface scale
Tinea (dermatophyte -septated branching hyphae- infection) which can be detected with KOH stain
Pt with ESRD and DM presenting with individual papule or numerous widespread hyperpigmented papules with umbilicated central core
Kyrle disease- caused by collagen extrusion from the dermis into and through the epidermis
Yellowish, thickened papules and nodules with progressive skin tightening and sclerosis in the setting of ESRD and gadolinium
Nephrogenic systemic fibrosis (presents similar to progressive systemic sclerosis)
Cutaneous findings are thickening of the skin, which results in lack of joint mobility, dilated periungual capillary loops, Raynaud phenomenon, digital ulcerations, and digital infarcts.
Progressive systemic sclerosis
Do you need abx for a cutaneous abscess?
No, I&D should be enough unless there are signs of systemic illness
Benign pigmented macules or papules with a surrounding “halo” of hypopigmented or depigmented skin, most frequently presenting on the back of teenagers and young adults.
Halo nevi
Malignant melanoma presents as macules, papules, or plaques typically larger than ____ in diameter and shows asymmetry and irregular boarders, as well as color variation within the lesion.
6mm
Red, thin plaques with variable amounts of scale in the axillae, intergluteal cleft, and perineum, and under the breasts and pannus.
Inverse psoriasis
Firstline treatment of dermatitis herpetiformis
Gluten-free diet and dapsone
What is dermatitis herpetiformis
subepidermal autoimmune bullous disorder that is extremely pruritic. There are small tense vesicles and papules, which are rarely intact, so the usual presentation is excoriations on the elbows, knees, and buttocks.
Deposition of granular IgA in the dermal papillary tips is pathognomonic.
Don’t forget to check for _____ deficiency before starting dapsone.
G6PD
_____ can cause allergic contact dermatitis that mimics a wound infection; the most appropriate initial management is to discontinue its use.
Neomycin and bacitracin
What is the first-line treatment for comedonal acne?
Topical retinoids
