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dermatophyte fungal infections
Three main types -
tinea capitis - scalp
tinea corporis - trunk, legs or arms
tinea pedis - feet
''Tinea capitis'' (scalp ringworm)
may cause scarring alopecia (kids)
if untreated a raised, pustular, spongy/boggy mass called a kerion may form
commonly Trichophyton tonsurans (UK/USA)
? Microsporum canis (from cats/dogs) - fluoresce under Wood's lamp (unlike T tonsurans)
most useful investigation - scalp scrapings
//management// - oral antifungals: terbinafine (TT) or griseofulvin (MC)
give topical ketoconazole shampoo for 2/52 to reduce transmission
''Tinea corporis'' (ringworm)
causes - Trichophyton rubrum and Trichophyton verrucosum (cattle)
well-defined annular, erythematous lesions with pustules and papules
may be treated with oral fluconazole
''Tinea pedis'' (athlete's foot)
characterised by itchy, peeling skin between the toes
common in adolescence