Spicy anal pain after diarrhea may be caused by perianal inflammation, hemorrhoids, anal fissure and other reasons, can be physical therapy, drug therapy, surgical treatment and so on. 1. Perianal inflammation: when the patient has too much diarrhea, it will stimulate the perianal tissues, which will lead to perianal inflammation and stimulation, the patient can pay more attention to rest, the use of antidiarrheal medication such as: montelukast, etc., which can reduce the stimulation of the perianal area; you can also use warm water to the perianal area to clean, for the improvement of the perianal area of congestion, edema has a great help. 2. Hemorrhoids: when the patient exists hemorrhoids and other diseases, diarrhea, there will also be perianal hot pain, then the patient can use drugs for treatment, such as: Ma Yinglong hemorrhoid cream, hemorrhoid gel, etc., can be very good to relieve symptoms. 3. anal fissure: if the patient occurs anal fissure, will also lead to diarrhea after the anal hot pain, then the application of drug treatment effect may not be very satisfactory, the patient may need surgical treatment, excision of old anal fissure tissues, can achieve very good therapeutic effect. All of the above drugs can not be used without authorization, the patient can be used under the guidance of a doctor, if uncomfortable symptoms should be as soon as possible to seek medical attention, after diarrhea, anal hot pain in the patient is best to go to the hospital in a timely manner to check, and timely treatment.