Rectal prolapse is not immediately life-threatening in most cases, but it can become dangerous if left untreated or if the prolapsed tissue gets trapped outside the body. The biggest risk is incarceration, where the rectum protrudes through the anus and can’t be pushed back in. When that happens, blood supply to the tissue can be cut off, leading to tissue death. That scenario is a surgical emergency.
Most people living with rectal prolapse deal with chronic, quality-of-life symptoms rather than acute danger. But the condition does tend to worsen over time, and the longer it goes without treatment, the more damage it can cause to the muscles and nerves that control bowel function.
When Rectal Prolapse Becomes an Emergency
The most dangerous complication is strangulation. This happens when a prolapsed section of rectum becomes incarcerated (stuck outside the body) and the surrounding tissue squeezes it tightly enough to cut off blood flow. Without blood supply, the rectal tissue begins to die. If gangrene develops, both the risk of serious infection and the complexity of surgery increase significantly. The National Institute of Diabetes and Digestive and Kidney Diseases identifies two red flags that require immediate medical attention: heavy rectal bleeding, and a prolapse that cannot be pushed back inside the body.
If the protruding tissue looks dark, discolored, or feels hard and painful, do not attempt to push it back in yourself. Necrotic (dying) tissue is a contraindication for manual reduction because forcing it back could cause a perforation. This needs emergency surgical evaluation.
Chronic Risks of Untreated Prolapse
Even when a prolapse isn’t an emergency, it causes progressive damage. The repeated stretching of the anal sphincter muscles weakens them over time, which leads to fecal incontinence, the inability to control bowel movements. For many people, this becomes the most disabling aspect of the condition. The longer the prolapse persists, the harder it is to restore normal sphincter function, even after surgical repair.
Rectal prolapse can also injure the lining of the rectum through constant friction and strain. This can lead to solitary rectal ulcer syndrome, a condition where ulcers form on the rectal wall. Symptoms include rectal bleeding, mucus discharge, pelvic pain or fullness, and a persistent feeling of incomplete bowel movements. These ulcers are not cancerous, but they can be difficult to heal while the underlying prolapse remains untreated.
Chronic constipation and straining often worsen as prolapse progresses. The protruding tissue can partially block the passage of stool, creating a frustrating cycle where straining makes the prolapse worse, and the worsening prolapse makes bowel movements harder.
Internal vs. External Prolapse
Rectal prolapse exists on a spectrum. Doctors use a five-grade classification system. In the earliest stages (grades I and II), the rectal wall folds inward but stays inside the body. This is called internal rectal prolapse or rectal intussusception. It can be as subtle as a few millimeters of rectal wall folding during straining, or it can involve all layers of the rectal wall telescoping into itself. Many people with internal prolapse don’t realize they have it, though they may notice difficulty emptying their bowels completely.
At higher grades (III and IV), the prolapse descends into or through the anal canal. Grade V is external prolapse, where the full thickness of the rectum visibly protrudes from the anus. External prolapse carries the highest risk of incarceration and strangulation, and it’s the type most likely to cause significant incontinence and bleeding.
How to Tell It Apart From Hemorrhoids
Rectal prolapse and prolapsed hemorrhoids can look similar, especially when tissue is bulging from the anus. The key visual difference is the pattern of the folds. Rectal prolapse produces circular, concentric rings of tissue because it involves the full circumference of the rectal wall sliding outward. Prolapsed hemorrhoids, by contrast, have radial folds (like spokes on a wheel) and tend to appear as distinct cushions of tissue clustered in specific spots around the anal opening. If you’re unsure which you’re dealing with, a doctor can tell the difference with a physical exam.
Who Is Most at Risk
Rectal prolapse affects two main groups. In children, the highest incidence occurs between ages one and three, and it affects boys and girls equally. In developed countries, constipation is the most common trigger in children. In developing countries, parasitic infections, malnutrition, and chronic diarrheal illness are more frequent causes. Pediatric prolapse often resolves with treatment of the underlying condition.
In adults, rectal prolapse is far more common in older women, particularly those who have had multiple vaginal deliveries or who have chronic constipation. Weakening of the pelvic floor muscles and connective tissue with age plays a significant role. Conditions that cause chronic straining, such as constipation or chronic obstructive pulmonary disease, increase risk.
What Surgery Looks Like
Surgery is the only definitive treatment for full-thickness rectal prolapse. There are two broad approaches: abdominal procedures, where the surgeon works through the abdomen to secure the rectum in place, and perineal procedures, where the repair is done through the anus. Perineal approaches are typically used for older or higher-risk patients because they’re less invasive.
Both approaches have similar complication rates, around 10.5% in one multicenter study of patients undergoing repeat surgery. The more relevant concern for most patients is recurrence. Even after successful surgery, prolapse can come back. In a study of patients who had already experienced one recurrence and underwent a second repair, about 6% had another recurrence within one year, rising to roughly 16% by five years. About a third of those re-recurrences happened within the first year after surgery. These numbers reflect a particularly challenging group (people whose prolapse had already come back once), so first-time surgical success rates are generally better.
Managing a Prolapse Safely at Home
If your prolapse can still be gently pushed back inside, this is called manual reduction, and it’s generally safe to do at home while you wait for definitive treatment. For mucosal prolapse (where only the inner lining protrudes), self-reduction is straightforward. Full-thickness prolapse can also be reduced manually, though it takes more effort.
The critical safety rule: never attempt to push the tissue back in if it looks dark, blackened, or feels very firm and painful. These are signs of tissue death, and manual reduction could cause a tear or perforation. In that situation, go to the emergency room. You should also seek immediate care if you notice heavy bleeding or if the prolapse simply won’t go back in despite gentle, steady pressure. Applying a cold compress to reduce swelling before attempting reduction can sometimes help, but if it doesn’t work within a few minutes, stop trying.