Diarrhea caused buttocks red, if diarrhea caused by, need to control diarrhea, if not wiped clean infection caused by, need to actively control the infection. 1. In the anus near the buttocks and other places such as skin redness, caused by the root cause should be due to diarrhea, so the root cause to relieve the symptoms is to treat diarrhea. Because the cause of diarrhea and there are many kinds. Such as digestive flora dysbiosis, lactose intolerance, food allergies, etc., according to different situations to do the appropriate treatment, dysbiosis can take bifidobacteria tablets, lactose intolerance, food allergies should try to avoid such foods. 2. The redness of the skin is also related to local care, local skin is not clean, and then still exist for a long time on the skin erosion is very big, easy to cause local skin redness, long rashes and even ulcers. So after diarrhea to do a complete cleaning, and then try to ensure that the local dry, if the local skin has been ulcerated, according to the situation of the external use of some antibiotic ointment, such as erythromycin ointment, to promote the recovery of the local skin. Drugs need to follow the doctor’s instructions reasonable application.