Itabashi Honcho Dermatology and Plastic Surgery

It is caused by infection with a fungus called dermatophyte. When dermatophytes are commonly infected on the feet, they are called athlete's foot. Of course, it can also be transmitted in places other than the feet. When dermatophytes are infected in the crotch, it is commonly called tinea cruris.

Most athlete's foot is thought to be caused by the long-term sharing of slippers and foot mats in the home. However, if you haven't been in contact with dermatophytes for a long time, you won't get sick, but modern people wear socks and shoes all day long, so they may become more prone to athlete's foot with age.