Dermatology Day 1 Flashcards
what do you have to do with derm patients?
get them naked!
what is a macule?
circumscribed, flat lesion <0.5cm
what is a flat discoloration >0.5cm
patch
what is actinic keratosis?
SCCA confined to the epidermis, lesions are common caused by CHRONIC PROLONGED SUN EXPOSURE
what is an elevated solid lesion <0.5 cm?
papule
what is a circumscribed, elevated, superficial solid lesion >0.5cm?
plaque/nodule
what is a circumscribed collection of leukocytes and free fluid?
pustule
what is a circumscribed collection of free fluid <0.5cm?
vesicle
what is a circumscribed collection of free fluid >0.5cm?
bullae
what are wheals?
edematous plque resulting from infiltration of the dermis with fluid (transient and lasts hours)
what is excess dead epidermal cells produced by abn keratinization and shedding?
scale
what is a collection of dried serum and keratin debris?
crust
what is hyperkeratotic?
thickening of stratum corneum
what does impetigo affect?
superficial layers of skin
what does erysipelas affect?
infection extends into cutaneous lymphatics
what does cellulitis affect?
skin and subcutaneous tissues
most skin infections are caused by what kind of bacteria?
gram positive
what is the most common contagious superficial skin infection?
impetigo
impetigo is a common complication is in which condition?
atopic dermatitis
what do you do with recurrences of impetigo?
use bactroban BID x10 days to everyone in the house
where do you harvest the scraping from when you want to do a KOH prep?
outside border of the lesion
what do hyphae look like?
tree branches
what is leser-trelat sign?
dramatic increase in number of super itchy SKs can indicate an underlying malignancy
what is the preferred lab test for nails and hair and sensitive skin areas to test for fungus?
fungal culture (turns pink in 6-7 dys)
