Red body acne may be due to atopic dermatitis, folliculitis, herpes zoster, etc., and need to be treated for the cause. If it is allergic dermatitis, anti-allergy medication is needed; if it is folliculitis, antibacterial medication is needed; and if it is herpes zoster, anti-viral medication is needed. 1. Allergic dermatitis: external seafood, hair, dander, pollen, dust and other allergens contact with the surface skin or through the respiratory tract and other parts of the human body, triggering an allergic skin reaction, rash, itching and other symptoms. Need to take chlorpheniramine maleate, loratadine and other antihistamines, topical glucocorticoid drugs. 2. Folliculitis: the skin lacks cleanliness for a long time, grease and dust and other substances accumulate in the mouth of the hair follicle, the follicle secretion discharge is blocked, and then bacterial infection occurs folliculitis, hair follicle local redness and swelling. You can apply erythromycin ointment, mupirocin ointment, fusidic acid cream and other treatments. 3. Herpes zoster: unilateral clusters of blisters on the chest, abdomen and even head and face after varicella-herpes virus infection. It can be treated with antiviral drugs such as acyclovir and bromovudine. Red body acne may be related to a variety of factors, it is recommended to seek medical attention to clarify the diagnosis. Pay attention to the use of medication under the guidance of a physician.