Children’s ringworm and baldness are not the same, the former is caused by ringworm infection, the latter is related to immune disorders, genetics and other factors, and alopecia areata has clear boundaries. Children’s ringworm of the head is a skin disease caused by dermatophyte infection, manifested as alopecia areata with scaling and hair breakage, and other extensive scalp scales, with varying degrees of itching and even odor. In addition. Tinea capitis has the symptoms of hair loss and hair breakage, but there is no clear boundary with the surrounding scalp. Pemphigus vulgaris is sudden and limited patchy hair loss, related to autoimmunity, heredity, stress, endocrine and so on, which manifests itself as patchy hair loss with clear boundaries, no scarring in the hair loss area, no scaling, and no itching symptoms. In addition, the baldness hair loss area is smooth and clear with the surrounding boundary. There is a clear difference between the two diseases, consider ringworm or baldness, take your child to the hospital in time.