Acquired structural abnormalities |
Obstetric injury (vaginal delivery) |
Anorectal surgery (hemorrhoid, fistula, fissure, etc.) |
Rectal intussusception/prolapse |
Sphincter-sparing bowel resection |
Trauma (e.g., pelvic fracture, Anal impalement) |
Functional disorders |
Chronic diarrhea |
Irritable bowel disease |
Inflammatory bowel disease |
Radiation proctitis |
Malabsorption |
Hypersecretory tumors |
Fecal impaction (paradoxical diarrhea) |
Physical disabilities |
Psychiatric disorder |
Neurological disorders |
Pudendal neuropathy |
(radiation, diabetes, chemotherapy) |
Spinal surgery |
Multiple sclerosis |
Dementia |
CNS disorder: stroke, trauma, tumor, infection |
Spina bifida |
Congenital disorders |
Imperforate anus |
Cloacal defect |
Spina bifida (myelomeningocele, meningocele) |