Ringworm, or tinea corporis, is caused by a fungal infection, along with obesity, excessive sweating, and other related factors, and often manifests itself as red pimples and other skin lesions. Ringworm is often caused by fungal infections such as Trichophyton rubrum and Trichophyton verrucosum, which are mainly transmitted through direct or indirect contact, and can also be caused by the spread of infection of one’s own hands and feet, such as ringworm. At the same time, there are also obesity sweating, diabetes, long-term application of glucocorticoids and other related factors. Ringworm is often characterized by red papules, pimples and other lesions, with scaly patches appearing as the condition develops. Usually the lesions have clear boundaries, with the edges expanding outward and the center gradually fading, forming a ring or multiple rings, the edges of which are often accompanied by pimples, papules, and so on. There may be other reasons for ringworm on the child’s body, it is recommended to go to the hospital in a timely manner, improve the examination to clarify the cause of the disease, under the guidance of the doctor to give targeted treatment or treatment.