Acne on forehead and sides of face may be related to acne, folliculitis and other factors. 1. Acne: may be due to increased androgen levels, sebum secretion disorders, bacterial infections and other factors, commonly found in adolescents, facial pimples, papules, pustules, nodules, etc., mostly symmetrically distributed, and often can be naturally reduced or cured after puberty. 2. Folliculitis: mainly due to bacteria, fungi and other pathogens, commonly found in the head, face, neck and other parts of the head, manifested as red papules around the hair follicles, accompanied by red, swollen, hot, painful inflammatory reaction, may be accompanied by itching, pain and other self-conscious symptoms. It is recommended that patients with acne on the forehead and both sides of the face seek medical attention in time to clarify the cause of the disease and treat the symptoms. In daily life, we should do a good job of facial hygiene care, avoid scratching the affected area; avoid eating spicy and stimulating foods such as chili, mustard, etc., and should maintain a light diet; ensure adequate sleep and avoid staying up late.