Jock itch, also known as tinea cruris, is a fungal infection that affects the skin in warm, moist areas of the body, such as the groin, buttocks, and lower abdomen. It is caused by a fungus that thrives in these conditions, leading to itchy rashes that can sometimes be shaped like a ring. This condition is common among people who sweat a lot, such as athletes and performers, but it can affect anyone. The infection can also occur in other areas where skin rubs against skin, such as under the breasts. Treatment for jock itch is usually straightforward and involves the use of over-the-counter or prescription antifungal creams or ointments. In more severe cases, oral antifungal medications may be necessary. It is important to keep the affected area clean and dry to prevent the infection from worsening. If you have any concerns or if the infection does not improve with over-the-counter treatments, you should see a physician for further advice and treatment. Fungal infections like jock itch typically clear up within 1 to 3 weeks with proper treatment.