A lump of flesh behind the anus may be hemorrhoids, warts, perianal abscess, folliculitis, etc. You can use hemorrhoids fasting tablets, imiquimod cream and other drugs. Hemorrhoids are caused by venous plexus of the anal canal or the lower end of the rectum that is congested or bruised and enlarged, as long as it manifests itself in bleeding, perianal itching, pain and other symptoms, you can take hemorrhoids quickly Ning tablets, locust pills and other drugs to promote venous reflux, reduce bleeding, reduce edema, and promote recovery. You can also use external hemorrhoid cream for local application treatment. Warts are a sexually transmitted disease caused by the human papilloma virus, and can be treated with imiquimod cream, as well as through freezing, laser and other physical therapy. Perianal abscess is an abscess formed due to the infection of anal gland obstruction, which can be treated with antibiotics, such as cephalosporin, penicillin, etc., and can be surgically incised and drained when an abscess is formed. Folliculitis is an inflammatory reaction of the hair follicles, which can be treated with mupirocin ointment and fusidic acid cream. Daily attention should be paid to adjusting the diet structure, eat more fresh fruits and vegetables and coarse grains, eat less spicy and stimulating food, and develop a correct bowel habit, the use of medication please follow the doctor’s instructions.