text: what is the cure for taenia cruris or jock itch?   jock itch is a fungus.  jock itch is best treated with topical creams or ointments since the fungus only affects the top layer of skin. many of the antifungal medications require a prescription, but there are three that can be bought over-the-counter (otc). the otc antifungals are tolnaftate (tinactin), clotrimazole (lotrimin), and miconazole (micatin).