Lotrimin Ultra Jock Itch Antifungal Cream uses an active ingredient to cure most jock itch while providing effective relief from these symptoms: Itching, Burning, Cracking, Scaling, Chafing Discomfort Lotrimin Ultra penetrates to kill the fungus right where it starts. Jock itch is a contagious fungal infection called tinea cruris caused by various types of fungus like those that cause athlete's foot. It infects the surrounding areas of the groin and inner thigh. Made in USA. Covered by the Bayer HealthCare LLC – Consumer Health 60-Day Satisfaction Guarantee. See below for details.