What is rectal prolapse? 

Rectal prolapse is a condition in which the rectum (the lower end of the colon, located just above the anus) drops downwards and turns inside out. 

In the early stage, the rectum stays inside the body, but as the condition worsens, it may protrude out through the anus. There is often weakness of the anal muscles, and this may result in leakage of stool or mucus. Rectal prolapse is more common in women than men.