Ringworm is usually caused by a fungus. Infection caused by superficial fungi invading the cuticle, hair, nails and other parts of the skin of humans and animals is called dermatophytosis, or ringworm for short. Ringworm of the head is mainly caused by Trichophyton mentagrophytes and Microsporum canis, which can be spread through direct contact, barber tools, pillowcase, etc. Ringworm of the body, tinea cruris, tinea cruris, tinea pedis, and tinea cruris are mainly caused by Trichophyton erythropolis and Trichophyton musteliosis, which can be spread through direct contact, and can also be caused by the spread of tinea infections in other parts of the body. Ringworm can be spread by direct contact or by the spread of ringworm infection from other parts of the body. Ringworm is caused by pimples, herpes, flaking, itching, pain, hair loss, nail changes, and other symptoms after the ringworm bacteria invade various parts of the body. If ringworm occurs, it is recommended to go to the hospital immediately, the doctor to develop a specific diagnosis and treatment plan, early formal treatment, so as not to delay the condition.