There is a wide range of sores on the cheeks, such as folliculitis and acne, which are associated with a variety of factors, including androgen production and keratinization of the sebaceous ducts of the hair follicles. 1. Causes of acne: 1) Main causes: Acne can occur due to factors such as exuberant secretion of androgens, large amounts of sebum, keratinization of follicular sebaceous gland ducts, propagation of Propionibacterium acnes, and immune-inflammatory reactions. (2) Possible triggers: when the human body often stays up late and does not sleep regularly, or often eat some greasy, high-sugar foods and dairy products, acne can occur on the face. 2. Causes of folliculitis: Folliculitis can occur when the hair follicles on the skin surface are infected by bacteria and other pathogenic microorganisms, and folliculitis can manifest as facial acne, accompanied by redness, swelling and pain. After the sores on the face need to go to the hospital, a clear diagnosis of the disease can be targeted treatment and medication, they can not just randomly use drugs.