Unusual skin infection Invasive dermatophyte infection 2019-05-26T10:24:20Z The most common presentation of dermatophytosis in clinical practice is the appearance of scaly, cutaneous lesions found on the trunk in tinea coporis (ringworm), the feet or toes in tinea pedis (athlete's foot), the crural fold in tinea cruris (jock itch), the scalp in tinea capitis (cradle cap), or a discoloration of the fingernails or toenails in tinea unguium (onychomycosis). Dermatophytosis is a typically noninvasive infection but can evolve into a more aggressive disease in the immunocompromised host. Infection that extends deeply into the dermis by dermatophytes, fungi that typically cause different types of superficial infection (tinea) or skin, hair, or nails.