Small red bumps on the back, but also very itchy, according to different causes have different treatment methods, as follows: 1, nodular itchy rash: generally seen on the back appeared red, solid papules, hemispherical nodules, and the top will also appear wart-like growths, rough surface, and the patient appears itching intensely. The treatment can be oral glycopyrrolate tablets, olopatadine hydrochloride tablets, and also oral angelica bitter ginseng capsules, and you can choose a mixture of compound clobetasol propionate ointment and urea vitamin E cream for topical application. Liquid nitrogen cryotherapy and NB-UVB treatment can also be performed at the dermatology department. During the treatment period, you need to abstain from spicy and stimulating food and alcohol. 2, Malassezia folliculitis: This is an inflammatory skin disease caused by Malassezia follicular sebaceous glands, so you can see red papules on the back, and accompanied by itching, individual patients will also appear stinging sensation, and after the dermatological fungal smear test can be detected Malassezia. The treatment can be a mixture of bifenazole cream and trimethoprim econazole cream for topical use. If the patient has significant itching, then oral imipramine extended-release tablets and terbinafine hydrochloride tablets can also be taken. During the treatment period, you need to pay attention to personal hygiene, bathe regularly and wear cotton, loose underwear. Therefore, for patients with small red bumps on the back that are also itchy, it is recommended to go to a regular hospital and undergo appropriate laboratory tests under the guidance of a dermatologist to guide the clinical treatment.