Rectal Prolapse: Causes, Symptoms, and Treatment

The pelvic floor works silently in the background, supporting the lower digestive organs and maintaining normal bowel function. For most people, this system goes unnoticed until strain, ageing, or repeated stress begins to weaken its support. At first, the changes are subtle, often dismissed as minor discomfort or difficulty during bowel movements.

As this weakening continues, the rectum can gradually slip from its normal position and eventually protrude through the anal opening, a condition known as rectal prolapse. While not immediately life-threatening, it can significantly affect comfort and quality of life. In this blog, we will explore its causes, progression, and modern treatment options.

What Is Rectal Prolapse?

Rectal prolapse is defined as the protrusion of the rectal wall through the anal canal due to weakening of normal pelvic support structures. The rectum is normally held in place by pelvic floor muscles, fascia, and ligaments, but when these supports fail, the rectum may descend and telescope into itself, a process known as intussusception. With further progression, the full thickness of the rectal wall extends beyond the anus, resulting in a complete external prolapse.

How Common Is This Condition?

While rectal prolapse is often discussed in hushed tones due to its sensitive nature, it is a well-documented medical condition. It is relatively uncommon compared to other gastrointestinal issues like haemorrhoids, affecting approximately 2.5 out of every 100,000 people. However, the prevalence increases significantly with age. It is most frequently observed in adults over the age of 50, and women are roughly six times more likely to develop the condition than men. This gender disparity is largely attributed to the anatomical stresses of childbirth and the natural weakening of pelvic tissues following menopause. Despite its higher frequency in the elderly, it can also occur in young children, usually as a result of underlying conditions like cystic fibrosis or chronic digestive struggles.

What Are The Symptoms Of Rectal Prolapse?

Identifying rectal prolapse early is important for effective treatment. Unlike many internal conditions, it often causes visible or physical symptoms that first appear during straining. Over time, these symptoms become persistent and begin to interfere with daily activities and bowel function.

• Sensation of bulging during bowel movements: An early feeling of pressure, fullness, or something protruding from the anus, especially while straining, which may initially retract on its own.
• Visible red or pink tissue at the anal opening: As the prolapse advances, a moist fleshy mass may protrude and often requires manual repositioning.
• Rectal or anal discomfort: Persistent aching, heaviness, or pain due to stretching and irritation of the prolapsed tissue.
• Mucus discharge or rectal bleeding: Exposure of the rectal lining can cause inflammation, leading to mucus secretion or bright red bleeding.
• Loss of bowel control: Stretching of the anal sphincter may result in faecal or gas incontinence over time.
• Altered bowel habits: Chronic constipation, diarrhoea, or difficulty passing stool due to disrupted rectal anatomy.
• Incomplete evacuation sensation (tenesmus): A constant urge to defecate caused by nerve stimulation from the prolapsed tissue.

Causes of rectal prolapse

Rectal prolapse rarely occurs suddenly and usually develops gradually over time. Repeated strain and weakening of the pelvic floor reduce the rectum’s natural support, allowing it to slip downward. Understanding these factors is key to prevention and proper treatment.

Aging

With increasing age, muscles and ligaments throughout the body gradually lose strength and elasticity. In the pelvic region, this natural degeneration weakens the structures that support the rectum, making it more prone to downward displacement over time.

Pregnancy and Childbirth

During pregnancy, the growing uterus places sustained pressure on the pelvic floor. Vaginal childbirth further stretches and sometimes injures these muscles, which can compromise rectal support and lead to prolapse years later.

Prior Pelvic Surgery or Injury

Surgical procedures in the pelvic area, such as hysterectomy or bladder surgery, may alter normal anatomy or damage supportive tissues. Pelvic trauma can also disrupt muscles and nerves essential for maintaining rectal position.

Chronic Constipation or Diarrhoea

Repeated straining from long-standing constipation is a major contributing factor, as it continuously increases pressure on the rectum. Chronic diarrhoea can also contribute by causing ongoing irritation and weakening of the anal sphincter.

Intestinal Parasitic Infections

Parasitic infections can cause persistent inflammation and excessive straining during bowel movements. In children, especially, this repeated stress may weaken the rectal lining and supporting tissues.

Chronic Coughing or Sneezing

Conditions that cause frequent coughing or sneezing lead to repeated spikes in intra-abdominal pressure. Over time, this constant force strains the pelvic floor and can gradually displace the rectum.

Spinal Cord or Nerve Damage

The muscles that support the rectum rely on intact nerve signals from the spinal cord. Injury, tumours, or neurological disorders can impair these signals, reducing muscle tone and structural support.

Cystic Fibrosis

In pediatric patients, cystic fibrosis is a well-recognised cause of rectal prolapse. Thick intestinal secretions, malabsorption, and frequent straining increase pressure on an already vulnerable pelvic floor.

How To Differentiate Between Rectal Prolapse And Haemorrhoids?

Rectal prolapse is often confused with haemorrhoids because both can cause tissue to protrude from the anus. However, haemorrhoids are swollen veins, while rectal prolapse involves the actual descent of the rectal wall. Correct identification is essential, as their treatment approaches differ significantly.

How Is Rectal Prolapse Diagnosed?

Rectal prolapse can resemble other anorectal conditions, so accurate diagnosis requires careful evaluation. Doctors begin with a physical exam and may use specialised tests to confirm the diagnosis and assess severity.

• Digital Rectal Exam: The doctor inserts a lubricated, gloved finger into the rectum to assess the strength of the anal sphincter and to feel for any abnormalities or internal telescoping of the rectal walls.
• Defecography: This is a specialised X-ray or MRI study performed while the patient is having a bowel movement. It provides a real-time view of the rectum and anal canal, showing exactly how the tissue moves and how the rectum empties.
• Anorectal Manometry: This test uses a pressure-sensitive catheter to measure the strength of the anal sphincter muscles. It helps determine if the muscles are strong enough to prevent leakage or if they have been compromised by the prolapse.
• Lower GI Series (barium enema): The patient is given an enema containing barium, which coats the lining of the colon and rectum. X-rays are then taken to look for structural abnormalities or other issues in the large intestine.
• Colonoscopy: A long, flexible tube with a camera is used to inspect the entire length of the colon. This is done to rule out other underlying causes of symptoms, such as polyps, tumours, or inflammatory bowel disease.
• Electromyography (EMG): This test checks the coordination between the nerves and the muscles of the pelvic floor. It helps determine if nerve damage is a contributing factor to the rectal prolapse.

How Is Rectal Prolapse Treated?

While mild cases of internal prolapse might be managed with balanced diet and physical therapy, a full rectal prolapse almost always requires surgical correction. The goal of surgery is to secure the rectum back in its proper position and, if necessary, repair the anal sphincter to restore bowel control.

Abdominal surgery

For many patients, especially those who are younger or have fewer comorbidities, an abdominal approach is preferred. This involves making an incision in the abdomen (or using laparoscopic/robotic techniques) to pull the rectum back up and anchor it to the sacrum (rectopexy). This provides a very durable and long-lasting fix.

Perineal rectosigmoidectomy

Also known as the Altemeier procedure, this surgery is performed through the anal opening. The surgeon removes the portion of the rectum that is prolapsed and joins the remaining ends together. This is often chosen for elderly patients who may not tolerate a major abdominal surgery.

Delorme procedure

This is another perineal approach typically used for smaller prolapses. Instead of removing the entire section of the rectum, the surgeon strips away the inner lining (mucosa) and folds the muscular layer of the rectum to provide support. It is a less invasive option but has a slightly higher rate of recurrence than abdominal repairs.

What Are The Complications Of Rectal Prolapse?

If left untreated, rectal prolapse is a progressive condition that can lead to serious functional problems. As the rectum continues to descend, long-term damage to the anal sphincter and surrounding tissues may occur.

• Faecal Incontinence: ongoing stretching of the anal sphincter weakens muscle control, leading to involuntary leakage of stool or gas.
• Constipation: Prolapsed rectal tissue can obstruct stool passage, worsening constipation and increasing straining.
• Rectal Ulcers: Exposed rectal tissue becomes irritated, causing painful ulcers, bleeding, and risk of infection.
• Incarceration: In rare cases, the prolapsed rectum becomes trapped, cutting off the blood supply. This is a surgical emergency.

Conclusion

Rectal prolapse can be physically uncomfortable and emotionally distressing, but it is a treatable condition. Recognising early symptoms and seeking timely medical care can prevent complications and restore normal bowel function. With advances in surgical techniques, treatment today is safer, more effective, and focused on improving long-term quality of life.

For Non-Resident Indians, accessing timely and affordable treatment abroad can be challenging. India offers high-quality surgical care at a fraction of the cost, making it a preferred destination for rectal prolapse treatment. With the support of comprehensive health insurance and Niva Bupa NRI health insurance, patients can receive expert care in India while ensuring financial protection and peace of mind throughout treatment and recovery.

FAQs

1. How long does recovery take after rectal prolapse surgery?

Recovery depends on the surgery type. Abdominal procedures usually require 2 to 3 days in the hospital, with full recovery in 4 to 6 weeks. Perineal surgeries often involve a shorter hospital stay, but activity restrictions may last up to 6 to 8 weeks.

2. Can rectal prolapse come back after surgery?

Yes, recurrence is possible. Abdominal surgeries have a lower recurrence rate than perineal procedures. Following a high-fibre diet and avoiding straining reduces the risk.

3. Can exercises treat rectal prolapse?

Exercises cannot cure a full prolapse, but pelvic floor therapy and Kegel exercises may improve muscle strength and control, especially in early or internal prolapse.

4. Can diet help prevent rectal prolapse?

Yes. A high-fibre diet with adequate fluids helps prevent constipation and straining, which are major contributors to prolapse.

5. Why does rectal prolapse occur in children?

In children, it is often caused by constipation, infections, or cystic fibrosis. Most cases improve with medical treatment and growth, without surgery.