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Dermatology

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Common Fungal Diseases of Skin

Question
3 out of 28
 

Tinea capitis in children is caused by: (AIPG 2010)



A Trichophyton mentagrophytes

B Trichophyton rubrum

C Microsporum audouinii

D Trichophyton verrucosum

Ans. C
Microsporum audouinii

1). The ringworm of scalp or tinea capitis is most common in children before puberty and is usually caused by Microsporum audouinii, Microsporum canis or Trichophyton sulphureum.

2). In adults, tinea capitis is usually caught from a horse or cow (Trichophyton mentagrophytes or Trichophyton verrucosum).

3). The 1st sign is a fairly well-defined patch of hair loss in which the remaining hairs are broken, lusterless and lie at various angles to each other.

4). The patch maybe single or multiple and usually lies where the hairs are short (at the sides or back of skull).

Extra Edge: Tinea infections

a. Tinea capitis
1). Caused by microsporum canis or trichophyton tonsurans

2). Causes boggy swelling on scalp with easily pluck able hair (kerion)

b. Tinea Corporis
1). Caused by microsporum, trichophyton

2). Infection of glabrous or non-hairy skin of the body

c. Tinea Cruris
1). Caused by E. floccosum, T. rubrum & T. mentagrophytes

2). Infection of groin thigh, perineum, perianal area (ringworm of groin/jock itch),

3). adults males most commonly affected

d. Tinea pedis 1). Caused by E. floccosum, T. rubrum & T. mentagrophytes

2). Ringworm of feet (athlete foot)

e. Tinea Unguium 1). Caused by T. rubrum

2). Toe nail mainly involved, involves soft keratin of nail bed & later nail plate (hard keratin)

Common Fungal Diseases of Skin Flashcard List

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