What cause pressure in the rectum eve after a bowel movement?

Rectal spasm: Motility, compliance ; sensation of the rectum are important to fecal continence. Assuming you have undergone appropriate testing to rule out structural ; inflammatory causes (had colonoscopy?), hypersensitivity to distension ; abnormal motility patterns in the rectum are common. Clinical testing distinguishes ibs from levator ani muscle dysfunction, sphincter dysfunction, dyssynergia, proctalgia.