Tinea cruris is a disease caused by fungal infection, and it is quite contagious. For example, sharing towels or bath mitts at home, frequent visits to public baths and swimming pools, and some people have athlete's foot. If they wash their socks together with their underwear, it can also lead to cross-infection.

Once it occurs, it must be treated formally. Common antifungal creams can completely cure it. During treatment, it is necessary to regulate diet and lifestyle habits, avoid public baths and swimming pools, and not share bath towels. Socks and underwear must be washed separately to prevent cross-infection from recurring. The treatment course must be long, and it must be adhered to for at least one month.