The main reason for diarrhea and anal bloating is that when there is too much diarrhea, it can cause anal bloating. Diarrhea originally causes a feeling of urgency in the anus, which makes people feel like they want to defecate all the time. There are other causes, such as perianal inflammation caused by infection of the tissues around the anus, inflammatory external hemorrhoids and colitis, which can be produced. In addition, topical creams can also be used to relieve the common diarrhea that can also result, for mild cases just take some anti-diarrheal medication. If the feeling persists for a long time, it is recommended to go to the hospital for further examination to find out the specific situation. Remember to follow the doctor’s instructions and obey the doctor’s arrangements.