The appearance of acne on the back is actually acne. It is a very common inflammatory skin reaction in clinical settings. It can occur not only on the face, scalp, forehead, and back. The appearance of acne on the back is actually a very common situation, and if you look closely, acne will appear on the back to a greater or lesser extent. The reason why this happens is that it is often closely related to the fact that the back sweats more and the sebaceous glands secrete more. If acne appears on the back, it does not need to be treated if it is not very serious. If localized acne is more frequent and infection is evident, you can apply ointments like retinoic acid ointment, benzoyl peroxide gel, and antibiotic ointments topically, and avoid scratching your back repeatedly.