Redness and acne on the face may be caused by folliculitis, acne, allergies and other factors, patients should seek medical attention to clarify the cause and treatment. 1. Folliculitis: Inflammatory dermatosis mainly involving hair follicles, when occurring in the face, the patient will have redness and swelling of the face with acne, local itching, pain, such people should pay attention to facial cleansing, topical use of mupirocin, fusidic acid and other drugs. 2. acne: the face of redness and swelling long acne may also be caused by acne, and propionibacterium acnes infection, follicle opening keratinization abnormalities and other factors related to the adolescent population, the patient will also have localized pain, itching, such people should pay attention to light diet, avoid staying up too late, can be used topical vinpocetine, erythromycin, etc. for treatment. 3. Allergy: face redness and swelling long acne may also be caused by allergies, patients in the onset of more contact with pollen, animal hair and other substances, it should avoid re-exposure to allergens, the use of loratadine and other drugs for treatment. It is recommended to consult a doctor in time, and all the above drugs should be used under the guidance of a doctor.