Obstructed defecation is a disorder resulting in difficulty evacuating stool from the rectum. It is characterised by frequent visits to the toilet, the sensation of incomplete emptying of the bowel, often with straining to defecate. During a normal bowel movement, all the muscles inside your pelvis, including the anal sphincter, should relax in order to allow passage of faeces out of the body. Sometimes, these muscles fail to relax; or they can even squeeze (contract) instead of relaxing, this is known as Obstructive Defecation Syndrome. This condition may increase the risk of vaginal or rectal prolapse.