Dark and Light Rashes Flashcards
hyperpigmented scalymacules on the upper chest and back make you suspicious of what?
tinea versicolor
what causes tinea versicolor?
round spores of malassezia
how do you diagnose tinea versicolor?
KOH exam
is tinea versicolor always hyperpig?
nah it can be hypo too
how do you treat tinea versicolor?
with anti dandruff shampoos like selenium sulfide and pyrithione zinc or ketoconazole
how long does tinea versicolor take to clear?
months
what is melasma?
hyperpigmented reticulated patches on the cheeks of women
who gets melasma?
common in mexican and asian women
what is melasma associated with?
pregnancy
what do you do to prevent melasma?
heavy use of sunscreen
what is a drug that can cause a rash on the skin?
minocycline
describe the changes seen with minocycline
brown/blue grey deposition/pigmentation
where does minocycline pigmentation occur?
starts in gingiva/mouth and moves to scars and shins…can appear in bones
name two other meds that cause skin rashes
amiodarone and hydroxychloroquine and chlorquine
what is stasis dermatitis?
sitting around and get accumulation of hemociderin in skin of legs due to poor circulation
what color is stasis dermatitis usually?
usually a brown color with eczematous pattern
what can occur with long standing stasis dermatitis?
venous ulcers
how do you treat stasis dermatitis? ointment or cream?
elevation and compression with ointments
if you have an injury…what can happen to the skin surrounding it after healing? what is this called?
can be hyper or hypopigmented
postinflamm hyper or hypopigmentation
what exam do you do to determine if something is hypopig or totally depig?
woods light exaM
how does depig appear on woods light exam?
flashy white
what is depigmentation of the hands or face called?
vitiligo
how is vitiligo controlled?
autoimmune disease attacking melanocytes
give two drug treatments for vitiligo
topical steroid or tacrolimus
if something is hypopgmented following steroid use what is this called?
steroid hypopigmentation
what is dyskeratosis congenita? give the four symptoms of it
genetic issue leading to reticulate dyspigmentation
premature skin aging
nail dystrophy
oral leukoplakia
what are you at risk for with dyskeratosis congenita? why?
due to oral leukoplakia you are at risk for malignancy
