Tinea cruris is caused by a fungal infection and is highly contagious. It can be spread through skin-to-skin contact, or by sharing washcloths or towels. Once diagnosed with this condition, it is crucial to seek proper treatment. It is recommended to visit a dermatologist at a reputable hospital and use antifungal creams. Continuous application of these creams for at least one to two months can completely cure the infection. After recovery, it is important to maintain a proper diet and lifestyle habits. Avoid public baths or swimming pools. Those with athlete's foot should wash and sun-dry their socks and underwear separately and disinfect them. Avoid keeping small animals at home, and if working in a humid or hot environment, bathe frequently to keep the affected areas dry and clean.