Caught it at the gym, maybe?

Ringworm, as you probably know, is not a worm at all, but a fungus that causes itching and redness on human skin, most commonly on the feet (athlete’s foot) or groin (jock itch). Humans can pick up ringworm fungus in warm, moist places like shower stalls, so it won’t surprise you that ringworm is most common in warm, humid climates.

Ringworm fungus is highly contagious, passed on by skin contact, and humans can pass it on to cats (and vice versa). Ringworm on cat skin isn’t always red nor always itchy, so sometimes a vet is needed to determine the condition. It isn’t dangerous, just irksome, and, as already noted, it can be passed on to humans, so a cat who has it needs to be treated.