Jock Itch

Tinea cruris, known as "jock itch" or "jock rot," is a fungal infection caused by wearing clothes that are too tight or do not let air circulate. It usually occurs in damp, dark areas such as folds of the skin, especially in people who are overweight or if you sweat a lot from hot, humid weather or while exercising. It causes burning, redness, soreness, and itching on the genitals and the inside of the thighs.

Rubbing cornstarch on the affected area helps but sometimes a prescribed medication might be needed. Other things you can do include keeping the area clean and dry, washing your clothes frequently, and avoiding tight-fitting clothes. Don't try to wash it away -- you might make it worse. You can buy over-the-counter medications for jock itch. These medications should contain the ingredient miconazole.