Tinea Cruris (Jock Itch)

Tinea cruris is a common superficial fungal disorder of the groin, pubic/perianal area, and upper thighs. It is more common in male adults and adolescents and uncommon in prepubertal children. The lesions often are ring-shaped or circular (hence, the lay term “ringworm”), are sharply marginated, and can be intensely pruritic (jock itch). The involved skin is slightly erythematous and scaly, with color variations from red to brown. Lesions can display a scaly, vesicular, or pustular border (often serpiginous) with central clearing. Maceration may also develop. The disorder usually spares the scrotum unless candidiasis also is present. The margins can be...