Back acne needs to be treated according to its cause, such as folliculitis, acne, seborrheic dermatitis, etc. After a clear diagnosis, choose general treatment, drugs or laser treatment. 1. Folliculitis: Folliculitis is a bacterial infection of a single hair follicle, the treatment is mainly based on local treatment, you can choose to use topical mupirocin ointment, erythromycin ointment topical, and at the same time do a good job of local hygiene. 2. Acne: back acne may also belong to the acne, treatment can choose Vitamin A cream, adapalene gel topical, if necessary, can choose laser treatment. 3. Seborrheic dermatitis: Seborrheic dermatitis is caused by the increased secretion of sebaceous glands, which can cause back acne. The treatment needs to adjust the living and dietary habits, at the same time can be combined with tacrolimus ointment, hydrocortisone cream and other medications. There are many reasons for back acne, and it is recommended to go to the hospital in time after the symptoms appear, and choose standardized treatment after clarifying the factors, not private treatment, so as not to lead to adverse consequences.