Skin VII Flashcards
list the 3 members of dermatophytes
- Epidermophyton spp.
- Microsporum spp.
- Trichopyhton spp.
dermatophytes are spread via ____
why is this significant?
dermatophytes are spread via peron-to-person contact
fungi are usually inhaled but this is an exception
diagnosis of dermatophytes is skin/hair/nail scraping cultured on ____
diagnosis of dermatophytes is skin/hair/nail scraping cultured on Mycosel agar
70% of Trichophyton cases are ____
70% of Trichophyton cases are athlete’s foot (Trichophyton rubrum)
why is Microsporum, macroconidia significant?
they are positive for the 3 tests:
hair perforation test +
fluorescence +
urea +
what fungus is implicated in a vignette that has “sleeping with a dog,” or “got a dog recently”?
Microsporum canis
“spindle/lancet-shaped”
describe the image
“Beaver tail”
describe the image
parallel-shaped macroconidia
describe the image
“birds on a line”
the most common cause of Tinea versicolor is ____
the most common cause of Tinea versicolor is Malassezia furfur
M. furfur produces hypopigmented plaques by inhibiting ___
M. furfur produces hypopigmented plaques by inhibiting tyrosinase
what causes the condition seen in the image?
M. furfur
diagnosis of the condition seen in the image is via ___
diagnosis is via KOH preparation, which shows short hyphae and spores with a spaghetti-and-meatballs appearance
treatment of Tinea versicolor is with ____
treatment of Tinea versicolor is with Selenium sulfide shampoo