The back of the child’s head grows a white like ringworm may be ringworm of the head or seborrheic dermatitis. Antifungal drugs, glucocorticoids and other methods of treatment are available. 1. ringworm of the head: one of the white ringworm type, head lesions white or gray-white scaly patches, can be round, oval, the affected area hair near the fold, peripheral white fungal sheath. Generally no self-conscious symptoms, occasionally mild itching. Part of it is in a relatively static state. If you want to treat ringworm, you can use antifungal drugs such as terbinafine hydrochloride tablets. 2. Seborrheic dermatitis: it may be related to seborrhea, neurotransmitter abnormalities, microbial factors. The manifestation of skin erythema, which may be accompanied by greasy crusts or scales and white. Mild itching is self-conscious. Seborrheic dermatitis can be treated with glucocorticoids such as hydrocortisone, and selenium disulfide lotion. If the child has a white piece of the back of the head like ringworm symptoms are not relieved or aggravated, it is recommended to go to the hospital in a timely manner, to clarify the cause of the disease, standardized treatment under the guidance of the doctor.