Laxative abuse
Loss of storage capacity in the rectum due to surgery, radiation treatment or inflammatory bowel disease
Muscle damage around the anus (anal sphincters)
Nerve damage due to childbirth, constant straining during bowel movements, spinal cord injury, stroke, diabetes, and multiple sclerosis
Older age
Rectal prolapsed
Surgery to treat enlarged veins in the rectum or anus
Colorectal surgeon
Gastroenterologist
Hepatologist