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Home > Patient & Family Resources > Health Library > Jock Itch
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Jock itch (tinea cruris) is a form of ringworm. Ringworm is not a worm at all. It is a fungal infection of the outer layers of skin, hair, or nails. Fungi (plural of fungus) are present everywhere in our environment.
Ringworm of the skin appears as a rash with patches that may be red or peeling or that have bumps on the edges that look like blisters. The skin often is itchy, and the rash can spread quickly. You can have both jock itch and athlete's foot (tinea pedis) at the same time.
Jock itch is caused by a fungus. Fungi commonly grow on or in the top layer of skin. They may or may not cause an infection. Fungi grow best in warm, moist areas of the body such as the groin, inner thighs, and buttocks.
As the name suggests, jock itch mostly affects male athletes, but anyone can get it. Using public showers and locker rooms increases your chances of getting jock itch. Fungi grow best in the steamy rooms among damp towels, sweaty workout clothes, and wet floors. So it's not surprising that jock itch and athlete's foot often occur at the same time, since both are caused by fungi.
Symptoms of jock itch include the following:
Jock itch is annoying, but it usually is not serious. If you have had jock itch in the past, you may recognize the symptoms. Your doctor can tell if you have jock itch after asking questions about your symptoms and past health and by looking at your rash. Your doctor may scrape a little of the rash on a glass slide so that he or she can look at it under a microscope.
Most ringworm infections of the skin, such as jock itch, can be treated at home with antifungal creams and powders you can buy without a prescription. But have your doctor look at any infection that does not go away, is severe, or comes back. To treat jock itch, follow these steps:
You can help prevent jock itch by keeping your groin, inner thighs, and buttocks clean and dry. Dry off well after you exercise and shower. Try these other steps to prevent jock itch:
Other Works Consulted
Schieke SM, Garg A (2012). Superficial fungal infection. In LA Goldman et al., eds., Fitzpatrick's Dermatology in General Medicine, 8th ed., vol. 2, pp. 2277–2301. New York: McGraw-Hill.
Current as of: July 2, 2020
Author: Healthwise StaffMedical Review: William H. Blahd Jr. MD, FACEP - Emergency MedicineAdam Husney MD - Family MedicineMartin J. Gabica MD - Family MedicineKathleen Romito MD - Family Medicine
Current as of: July 2, 2020
Author: Healthwise Staff
Medical Review:William H. Blahd Jr. MD, FACEP - Emergency Medicine & Adam Husney MD - Family Medicine & Martin J. Gabica MD - Family Medicine & Kathleen Romito MD - Family Medicine
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