Tinea cruris is a disease caused by fungal infections. It is highly contagious and recurrent. It is helpful for the treatment of this disease to bathe frequently in daily life, and to keep the affected area dry and clean. Usually, applying antifungal cream can completely cure it. After it is cured, try to avoid bathing in public baths or swimming, avoid contact with small animals, and if you have athlete's foot, try not to mix socks and underwear when washing to prevent recurrent cross-infection. If the work environment is damp and unclean, be sure to bathe more frequently, wear loose pants, and keep the area ventilated and clean. Additionally, avoid spicy and irritating food, and try not to stay up late.