Etiology/Pathophys
Bacteria associated with hot tub folliculitis.
What is pseudomonas aeruginosa?
Salmon colored macules on trunk that spread in a Christmas tree pattern
What is pityriasis rosae?
2 differential diagnoses for malar rash
What is systemic lupus erythematosus, rosacea, erysipelas, cellulitis, sunburn?
KOH prep that shows budding hyphae or fungal culture
What is candidiasis albicans?
1st line treatment for carbuncles, abscesses, and large furuncles
What is irrigation and debridement?
Most common cause of impetigo.
What is staph aureus?
Associated with Auspitz and Koebner's sign with silvery plaques on extensor surfaces
What is psoriasis?
Distinguishing factor between Stevens Johnson syndrome and Toxic Epidermal Necrolysis
Next step to evaluate a 65 year old male farmer who presents with a 6mm yellow/brown scale with rough borders and hyperkeratotic appearance on his forehead
What is biopsy?
3 treatments for acne vulgaris
What is benzoyl peroxide, topical/oral antibiotics, topical retinoids, salicylic acid, oral contraceptives, or isotretinoin?
A condition is caused by an overgrowth of yeast due to irregular pH.
What is candida albicans?
Superficial diffuse spreading erythema, edema, and tenderness with sharply defined raised borders
What is erysipelas?
2 conditions causing patchy hair loss that may be mistaken for syphilis
What is alopecia areata and tinea capitis?
Diagnostic criteria to assess irregularity of nevis
Gold standard treatment for moderate to severe psoriasis
What is methotrexate?
Reactivation of varicella zoster virus
What is herpes zoster?
Characterized by pruritic, purple, polygonal, planar papules and plaques with fine white streaks
What is lichen planus?
Rosacea distinguishing factors from acne vulagaris
What is neurovascular component and absence of comedones?
Used for rapid diagnosis of HSV
What is Tzanck smear?
Pharmacological treatment for scabies
What is permethrin?
Organism associated with erythema migrans
What is borrelia burgdorferi?
What is tinea versicolor, vitiligo, melasma, lentigo, cafe au lait spots, carcinoma?
Diagnostic of choice for tinea infections
What is KOH prep?
Treatment for tinea unguium