Boys with back acne is commonly due to acne, which can be treated by skin cleansing, topical retinoids, antibiotics and so on. Acne is a chronic reactive disease of the sebaceous glands of hair follicles, mainly manifested as pimples, papules, pustules, etc. The onset of the disease is related to the level of androgens and increased sebum secretion. The first step in treating acne is to ensure that the skin is clean. You can use retinoids such as retinoic acid ointment and adapalene gel to regulate the keratinization of the follicular sebaceous gland ducts, and topical benzoyl peroxide, which has the ability to kill Propionibacterium acnes, can be used as well. For moderate to severe acne, drugs such as oral minocycline, doxycycline and isotretinoin can be combined. If necessary, combined with physical therapy such as red and blue light. Back acne may also be caused by folliculitis and other diseases, you need to go to the hospital to clarify the cause of the disease, the specific use of medication please follow the doctor’s instructions.