The rash often takes on a reddish half-moon shape on the inner thigh area with small, weeping, blisters and patches of scaly skin on the border. It’s also caused by the same fungus that causes athlete’s foot. Jock itch is actually a misnomer, because athletes aren’t the only ones who get it. It’s common in men - mostly because they sweat more than women, creating a moist environment, and because their genitalia generates a lot of heat. This rash also goes by the name of tinea cruris and ringworm of the groin. Here are some inner thigh rashes and their causes: Jock itch
