Dermatopathology 01

Question 1

Where, in the skin, are superficial fungal infections typically confined to?

Answer 1

stratum corneum

Question 2

What organisms typically cause superficial fungal infections?

Answer 2

dermatophytes

Question 3

List the superficial fungal infections?

Answer 3

Tinea capitis

Tinea barbae

Tinea corporis

Tinea cruris

Tinea pedis (athletes foot)

Tinea versicolor

Question 4

What areas of the body do tinea cruris typically manifest?

Answer 4

inguinal areas

Question 5

Epidemiology of Tinea cruris?

Answer 5

obese men in warm weather

Question 6

C/F Tinea cruris?

Answer 6

• Moist, red patches with raised scaly borders on upper inner thighs

Question 7

Another name for Tinea pedis?

Answer 7

athlete’s foot

Question 8

Clinical features of Tinea pedis?

Answer 8

• 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

Question 9

Pathology of Tinea pedis.

Answer 9

inflammation due to bacterial superinfection and is not directly related to the primary dermatophytosis

Question 10

What is the pathology of tinea versicolor?

Answer 10

Malassezia furfur (a yeast, not a dermatophyte)

Question 11

Describe gross appearance of those with Tinea versicolor?

Answer 11

• Mostly on the trunk, lesions consist of groups of macules of varied size and
  color with a fine peripheral scale

Question 12

Epidemiology of Tinea capitis?

Answer 12

children

Question 13

Pathogenesis of Tinea capitis?

Answer 13

caused by dermatophytes in the scalp

Question 14

What are the C/F of Tinea capitis?

Answer 14

asymptomatic, hairless patches of skin associated with crust formation, and scaling

Question 15

What the pathology of Tinea barbae?

Answer 15

dermatophyte infection of beard area

Question 16

Epidemiology of tinea barbae?

Answer 16

adult men

Question 17

What is the Pathogenesis of Tinea corporis?

Answer 17

fungal infection of the body surface

Usually caused by:

Excessive heat and humidity, exposure to infected animals, and chronic dermatophytosis of the feet or nails

Question 18

Epidemiology of Tinea corpora’s?

Answer 18

persons of all ages, particularly children

Question 19

What is the gross appearance of one with tinea corpora’s?

Answer 19

Expanding, round, slightly erythematous plaque with elevated scaling border