Dermatopathology 01 Flashcards
Where, in the skin, are superficial fungal infections typically confined to?
stratum corneum
What organisms typically cause superficial fungal infections?
dermatophytes
List the superficial fungal infections?
Tinea capitis
Tinea barbae
Tinea corporis
Tinea cruris
Tinea pedis (athletes foot)
Tinea versicolor
What areas of the body do tinea cruris typically manifest?
inguinal areas
Epidemiology of Tinea cruris?
obese men in warm weather
C/F Tinea cruris?
- Moist, red patches with raised scaly borders on upper inner thighs
Another name for Tinea pedis?
athlete’s foot
Clinical features of Tinea pedis?
- Diffuse erythema and scaling, initially localized to the web spaces
*Onychomycosis: spread to (or primary infection of nails) produce discoloration, thickening, and deformity of nail plate
Pathology of Tinea pedis.
inflammation due to bacterial superinfection and is not directly related to the primary dermatophytosis
What is the pathology of tinea versicolor?
Malassezia furfur (a yeast, not a dermatophyte)
Describe gross appearance of those with Tinea versicolor?
- Mostly on the trunk, lesions consist of groups of macules of varied size and
color with a fine peripheral scale
Epidemiology of Tinea capitis?
children
Pathogenesis of Tinea capitis?
caused by dermatophytes in the scalp
What are the C/F of Tinea capitis?
asymptomatic, hairless patches of skin associated with crust formation, and scaling
What the pathology of Tinea barbae?
dermatophyte infection of beard area