Jock itch is a fungal infection of the skin in the upper thigh and groin area. There are many over-the-counter products available for treating jock itch. All over-the-counter products are equally effective and some examples include clotrimazole (brand name Lotrimin® AF), miconazole (Micatin®), terbinafine (Lamisil®) and tolnaftate (Tinactin®). These products come in creams, lotions, powders and sprays. Powders are good for use in areas where sweating is a constant problem. Apply the medicine to the affected area following the directions on the package. Improvement is usually gradual and may take two to four weeks to clear up the infection. Keep the area dry and clean. Talk to your doctor if your symptoms don't improve or if they get worse.

Sources: Handbook of Nonprescription Drugs. American Pharmaceutical Association, 1996.Drug Facts and Comparisons, Facts & Comparisons, 2007.Diseases and Conditions, "Jock itch." http://www.mayoclinic.com. Mayo Clinic Health. Last accessed 1/9/2007.Medline Plus. Medline, 2007.This answer prepared 1/29/2001.This information updated 1/9/2007.