Acne on both sides of the face is also known as common acne. The causes are mainly the following: i. Genetic factors. Some patients have a family history; second, androgen secretion. After puberty, androgen secretion is high, resulting in increased sebaceous gland activity, increased oil secretion, sebaceous gland duct keratinization, and the formation of acne in the cheek area; third, bacterial infection. There is a large number of Propionibacterium acnes breeding in the cheek area, which can cause inflammatory papules, nodules, and cysts; Fourth, caused by drugs. Caused by long-term oral corticosteroids or iodide; V. Other factors. For example, often staying up late, eating too much pepper, using unsuitable cosmetics, etc.