Ringworm is a common infectious skin disease caused by dermatophyte infection, which is mainly characterized by skin lesions and itching, and it is contagious and easy to recur. 1. Lesions: mainly manifested as erythema, blisters, pustules, etc. If the fungus infects the nails, it will also cause damage to the nail area, such as cloudy nail plate, thickening, separation, discoloration and so on. 2. Itching: most fungal infections will have intense itching, such as ringworm, tinea capitis, tinea cruris, tinea cruris, tinea pedis, etc., and the itching is usually more intense. 3. contagious: dermatophytes can be transmitted through close contact, and a small number of them will be transmitted through indirect contact, and also through autotransmission, for example, patients with tinea pedis will have tinea cruris if they often touch their feet with their hands, and will have tinea cruris, and so on. 4. easy to recur: most of the fungal infections are more stubborn, easy to recur, the treatment cycle is longer, in the treatment should strictly follow the doctor’s instructions for a full course of medication. Suffering from fungal infections should be timely to the hospital, under the guidance of the doctor standardized treatment, the treatment period should pay attention to isolation, to avoid cross-infection.