Ringworm is an infection of the skin in the groin area, especially the inner thigh roots and folds, and in severe cases it can often involve the abdomen and buttocks. Ringworm is caused by mycobacteria. When the body’s skin is broken and resistance is reduced, pathogenic mycobacteria multiply and invade the skin and subcutaneous tissues and cause ringworm to develop. Tinea corporis starts as a small, itchy bump and then expands to form a circular or polymorphic lesion with a flat central edge and common flaking. The disease is mostly contagious through contact, and it can be spread through the following ways: 1. Person-to-person contact Tinea corporis is often transmitted through direct contact with the skin of someone who is already infected with tinea corporis, or between one’s own infected skin caused by ringworm of the hands and feet and nails. 2. From animals to people Direct contact with animals with ringworm (dogs, cats, rabbits, goats, pigs, or horses, etc.) and being infected. 3. Contact with fungus-carrying objects Tinea corporis can also be acquired from contact with some objects that the patient or sick animal has just used or touched, such as clothes, towels, bedding, combs or brushes. This disease is most common in summer, when the climate is hot and humid and the human body sweats a lot, especially in the femoral area. If you do not take a bath in time or wear tight underwear, a lot of sweat does not evaporate in time, and you are prone to get this disease, especially if you sit for a long time, such as drivers, students, and office workers. In addition, patients with diabetes, excessive leukorrhea, and long-term oral or topical application of a large number of broad-spectrum antibiotics or corticosteroids are also susceptible to ringworm. Therefore, in order to avoid the transmission of ringworm, it is important to be clean and not to have inappropriate sexual relations with other people. Do not use other people’s underwear, underwear and toiletries. Change your underwear often, keep your vulva clean, and wash and dry your clothes often. Reduce sweating and promote evaporation from the root of the femur. Try to keep dry and wear loose fitting underwear.