General measures to keep the groin clean and dry along with the use of zinc oxide ointment. Other medical conditions can mimic jock itch. A fungal or bacterial culture may be useful to detect the causative organism. Also, skin swab or culture will be needed in infectious jock itch. Microscopic examination of skin scrapings is done in the lab to check for causative organisms of infection. ![]() Jock itch is diagnosed mostly by a direct physical examination. Chronic infection makes the area scaly and dry. It causes large patches of erythema with central clearing, with oozing in the early stages. ![]() These causative agents reach the patients, body from unhygienic towels or undergarments and they produce keratinases, which allow invasion of the cornified layer of epidermis. The most common etiologic agents for jock itch (tinea cruris) are, Trichophyton rubrum and Epidermophyton floccosum.
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