causes of post diarrhea abdominal distention?
It is often related to excessive gas since the population of the normal intestinal flora (bowel bacteria) is disrupted. Other causes may include fluid accumulation in the abdomen and any other causes related to you medical history which your doctor will be able to advise you further on. It is possible that this distension is unrelated to the diarrhea and just a symptoms of the cause of the diarrhea. Bloating often occurs for no known reasons in conditions like IBS.
You can find a list of causes in this article :