Jock itch

  • Alternative Names

    Fungal infection - groin; Infection - fungal - groin; Itching in the groin; Ringworm - groin; Tinea cruris; Tinea of the groin

    • Itching in groin, thigh skin folds, or anus
    • Red, raised, scaly patches that may blister and ooze -- The patches often have sharply-defined edges and are often redder around the outside with normal skin tone in the center
    • Abnormally dark or light skin

    Signs and tests

    Your health care provider can usually diagnose jock itch based on how your skin looks.

    Tests are usually not necessary. If tests are needed to confirm the diagnosis, either a culture or a skin lesion biopsy (for example, a scraping of the skin) may be done. A KOH (potassium hydroxide) test may be done in the office for quick diagnosis.