Common causes of recurring forehead acne include acne, folliculitis, flat warts, etc. After a clear diagnosis, you can choose general treatment, medication or physical therapy. 1. Acne: Poor diet, prolonged late nights, and Propionibacterium acnes infections can trigger acne, leading to recurring forehead pimples. Patients should adopt a regular routine and a light diet, use adapalene gel and retinoic acid cream externally as prescribed by the doctor, and choose laser treatment if necessary. 2. Folliculitis: not paying attention to personal hygiene, Staphylococcus aureus infection of hair follicles, etc., may induce folliculitis, resulting in forehead acne repeatedly long. The treatment can follow the doctor’s advice to use mupirocin ointment, erythromycin ointment, at the same time to do a good job of local skin cleaning and hygiene work. 3. flat warts: forehead acne repeatedly long may also belong to flat warts, treatment can choose acyclovir cream topical, if necessary, can choose to laser removal. The reason for this is that there are many reasons for the headache, and it is recommended that you go to the hospital as soon as possible to get a clear diagnosis of the problem, and then give the standardized treatment, not to ignore the symptoms, not to private treatment, so as not to lead to adverse consequences.