Diarrhea, burning sensation in the anus may be related to hemorrhoids, anal fissure, acute gastroenteritis and other factors, according to the specific conditions, choose a reasonable treatment. 1. hemorrhoids: burning sensation in the anus after diarrhea, generally considered to be caused by hemorrhoids, usually associated with poor dietary habits and other reasons, daily to avoid spicy and stimulating food, can be carried out in the anal area of the skin cleaning, or doctor’s advice, the choice of hydrocortisone cream, ibuprofen extended-release capsules and other medications. 2. anal fissure: anal fissure patients will repeatedly stimulate the skin around the anal canal when the number of bowel movements increases, thus causing burning sensation in the anus, which can also be accompanied by severe pain, at this time, under the advice of the doctor to choose the anus tylenol ointment and other medications. 3. Acute gastroenteritis: If the digestive tract is infected by bacteria, viruses and other pathogenic microorganisms, can cause acute enteritis, patients will have diarrhea, abdominal pain and other symptoms, in the repeated stimulation of stool and repeated friction of the paper, will lead to redness around the anus congestion burning sensation, can be recommended to choose the Norfloxacin capsule, levofloxacin tablets and other drugs. If the burning sensation of diarrhea anus can not be effectively relieved, you should go to the hospital in time to check the symptomatic treatment, to avoid serious impact on daily life and body.