One of the main causes is suggested to be excessive and repetitive straining during defecation. Other causes include weakness of the pelvic floor muscles (secondary to age-related neuropathic degeneration or traumatic injury during pregnancy and labor.
Descending perineum syndrome
Urethral syndrome
PELVIS syndrome
Summer penile syndrome
Cauda equina syndrome
Urethral diverticulum
Ureterovaginal fistula
Rectovaginal fistula