Dermatopathology 01 Flashcards

1
Q

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

A

stratum corneum

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2
Q

What organisms typically cause superficial fungal infections?

A

dermatophytes

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3
Q

List the superficial fungal infections?

A

Tinea capitis

Tinea barbae

Tinea corporis

Tinea cruris

Tinea pedis (athletes foot)

Tinea versicolor

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4
Q

What areas of the body do tinea cruris typically manifest?

A

inguinal areas

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5
Q

Epidemiology of Tinea cruris?

A

obese men in warm weather

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6
Q

C/F Tinea cruris?

A
  • Moist, red patches with raised scaly borders on upper inner thighs
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7
Q

Another name for Tinea pedis?

A

athlete’s foot

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8
Q

Clinical features of Tinea pedis?

A
  • 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

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9
Q

Pathology of Tinea pedis.

A

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

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10
Q

What is the pathology of tinea versicolor?

A

Malassezia furfur (a yeast, not a dermatophyte)

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11
Q

Describe gross appearance of those with Tinea versicolor?

A
  • Mostly on the trunk, lesions consist of groups of macules of varied size and
    color with a fine peripheral scale
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12
Q

Epidemiology of Tinea capitis?

A

children

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13
Q

Pathogenesis of Tinea capitis?

A

caused by dermatophytes in the scalp

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14
Q

What are the C/F of Tinea capitis?

A

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

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15
Q

What the pathology of Tinea barbae?

A

dermatophyte infection of beard area

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16
Q

Epidemiology of tinea barbae?

A

adult men

17
Q

What is the Pathogenesis of Tinea corporis?

A

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

18
Q

Epidemiology of Tinea corpora’s?

A

persons of all ages, particularly children

19
Q

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

A

Expanding, round, slightly erythematous plaque with elevated scaling border