Tinea pedis is tinea pedis. Decreased immune function and environmental factors are all susceptible to fungal infections leading to tinea pedis. 1. Decreased immune function: the body’s immune function is impaired, its resistance will be reduced, may not be able to resist the fungus, resulting in tinea pedis. Patients with diabetes, AIDS, etc. will have impaired immune function, and are more likely to come into contact with fungus and develop ringworm. 2. Environmental factors: a hot and humid environment may promote tinea pedis, and if the feet are sweaty or wearing breathable shoes for a long time, it may induce fungal infection and tinea pedis. It is recommended that patients with tinea pedis go to a regular hospital and receive standardized treatment under the guidance of a doctor.