Swollen and painful red bumps on the body are considered to be caused by folliculitis or acne, which can be treated with medications (such as rosmarinol and erythromycin). 1. Folliculitis is an inflammation caused by Staphylococcus aureus infection of the hair follicles, often manifested as red papules centered on the hair follicles, accompanied by pain. Treatment can be mupirocin ointment combined with oral roxithromycin capsules. If there is pus, you need to go to the dermatology department of the hospital in time to deal with it, and you should never squeeze it with your hands. 2. Acne is a chronic inflammatory disease that occurs in the sebaceous glands of the hair follicles of the skin, and can occur at all ages, but most of them develop during puberty. Erythromycin and clindamycin can be used for treatment, but topical antibiotics are likely to induce drug resistance in Propionibacterium acnes, so try not to use them alone, and can be used in combination with topical retinoids for better results. All of the above drugs should be used in accordance with medical advice. It is recommended that the patient go to the hospital in time, after a clear diagnosis, under the guidance of the doctor for symptomatic treatment.