Half of the swelling of the anus may be due to enteritis and perianal abscess and other causes.
1. Enteritis: generally refers to inflammation of the small intestine and the lining of the large intestine, usually caused by bacterial, viral and other microbial infections, manifested as abdominal pain, diarrhea, mucus, pus and blood stools, swelling of the anus and other symptoms, you can use amoxicillin, metronidazole and other drugs for treatment.
2. Perianal abscess: generally due to the anal canal, rectum around the soft tissue or its surrounding interstitial acute purulent infection, manifested as perianal pain, redness, swelling, hard nodules and other symptoms, you can use kanamycin, gentamicin, streptomycin and other drugs for anti-infective treatment. In severe cases, the abscess can be incised and drained surgically.
Half of the anal swelling patients may cause anal fistula, septicemia and other serious symptoms, need to go to the hospital as soon as possible to confirm the diagnosis, under the guidance of a professional doctor for standardized treatment, to avoid delaying the condition.