If you have acne on your face all the time, you should consider the occurrence of skin diseases such as acne, rosacea or folliculitis. 1. Acne: When acne occurs, conical papules consistent with hair follicles appear on the face, forehead, chest and back, forming pimples, inflammatory papules, pustules or cysts and other skin lesions. Its occurrence can be related to hormonal imbalance, increased levels of androgens, the propagation of Propionibacterium acnes and immune-inflammatory response. 2. Rosacea: Its occurrence is influenced by susceptibility genes, and can be induced by multiple factors such as Helicobacter pylori infection and follicular helminth mites to produce an inflammatory response, which can form papules, pustules and other skin lesions. 3. Folliculitis: it is a purulent inflammation confined to the mouth of the hair follicle, which leads to bacterial (mostly Staphylococcus aureus infection) infection of the hair follicle and the surrounding tissues under the triggering factors of high heat and sweating, poor hygiene, scratching, etc., causing red papules and pustules can be formed subsequently. Facial acne, in addition to pay attention to facial hygiene, but also timely medical care, clear cause, follow the doctor’s instructions targeted treatment.