Acne on the head is a relatively common dermatological problem. The common causes are as follows: 1. Folliculitis, a limited inflammation of the hair follicle and its accessory organs, mostly centered on the hair follicle as a single presence. The clinical manifestation is the local skin redness and pain. 2, seborrheic dermatitis, are caused by endocrine disorders, excessive androgen secretion in the body, sebum secretion, glandular duct opening blockage. The clinical manifestation is a localized red papule high out of the skin with mild stinging and yellow pus head in case of co-infection.3. Tinea capitis, there are two types of fungal and bacterial infections. The clinical manifestation is intense itching with scalp papules and flaking. It is important to wash your hair regularly, choose the right shampoo, eat a light diet, do not eat spicy and stimulating food, do not eat greasy food, regular work and rest time, and do not stay up late.