Symptoms

Jock itch usually begins with a reddened area of skin in the crease in the groin. It often spreads to the upper thigh in a half-moon shape. The rash may be ring-shaped and bordered with a line of small blisters. It may burn or feel itchy, and the skin may be flaky or scaly.

When to see a doctor

See your doctor if your rash is painful or you develop a fever. And see your doctor if the rash hasn't improved after a week of treatment or if it hasn't cleared up completely after three weeks of treatment.