What is Intussusception? Symptoms, Causes, & Treatment

Intussusception happens when one part of your intestine slides into another part, like a telescope collapsing in on itself. This creates a blockage that prevents food and fluids from moving through your digestive system normally.

While this condition sounds scary, understanding what's happening can help you recognize the signs and get the right care quickly. Most cases occur in babies and young children, though adults can develop it too for different reasons.

What is intussusception?

Intussusception is when a section of your intestine folds into the section next to it. Think of it like pushing one part of a sock inside another part - the intestine essentially "swallows" itself.

This folding creates a serious blockage in your digestive tract. Food, liquids, and digestive juices can't pass through the blocked area normally. The folded intestine also gets squeezed, which can cut off its blood supply if not treated promptly.

The condition most commonly affects the area where your small intestine meets your large intestine. However, it can happen anywhere along your intestinal tract, depending on what's causing it.

What are the symptoms of intussusception?

The symptoms can vary depending on your age, but severe abdominal pain is usually the first and most obvious sign. In babies and young children, the pain often comes in waves, causing them to cry intensely and then seem fine between episodes.

Here are the main symptoms to watch for:

• Sudden, severe belly pain that comes and goes
• Vomiting, especially if it's green or yellow
• Blood in stool, which may look like red jelly
• A sausage-shaped lump you can feel in the belly
• Legs pulled up toward the chest during pain episodes
• Extreme fussiness in babies
• Lethargy or unusual sleepiness
• Refusing to eat or drink

In adults, symptoms might develop more gradually and can include persistent abdominal pain, nausea, and changes in bowel movements. Adult symptoms are often less dramatic than in children, which can make diagnosis more challenging.

What causes intussusception?

The causes differ significantly between children and adults. In babies and young children under 2 years old, there's usually no clear underlying cause - it just happens as part of normal development.

Common causes in children include:

• Viral infections that cause swelling in intestinal tissues
• Enlarged lymph nodes in the intestinal wall
• Normal intestinal contractions that go wrong
• Recent illness that affects the digestive system

In adults, intussusception almost always has an underlying cause that acts like a "lead point" - something that pulls one part of the intestine into another. These causes include:

• Intestinal polyps (small growths)
• Tumors, both cancerous and non-cancerous
• Scar tissue from previous surgeries
• Inflammatory bowel disease
• Meckel's diverticulum (a small pouch in the intestine)

Sometimes medications, particularly those that affect intestinal movement, can contribute to the development of intussusception in susceptible individuals.

When to see a doctor for intussusception?

You should seek immediate medical attention if you or your child shows signs of intussusception. This condition is a medical emergency that requires prompt treatment to prevent serious complications.

Call 911 or go to the emergency room right away if you notice severe abdominal pain that comes in waves, especially when combined with vomiting or blood in the stool. Don't wait to see if symptoms improve on their own.

In babies, watch for intense crying episodes where they pull their legs up to their chest, followed by periods of unusual calm. This pattern, combined with vomiting or changes in bowel movements, needs immediate medical evaluation.

Even if you're not completely sure, it's always better to have a healthcare provider examine concerning symptoms. Early treatment leads to much better outcomes and can prevent the need for more invasive procedures.

What are the risk factors for intussusception?

Several factors can increase the likelihood of developing intussusception. Age is the biggest risk factor, with most cases occurring in children between 6 months and 2 years old.

Risk factors in children include:

• Age between 6 months and 2 years
• Being male (boys are affected more often than girls)
• Recent viral illness or stomach bug
• Having had intussusception before
• Certain genetic conditions affecting the intestines

Adult risk factors are different and include:

• Having intestinal polyps or tumors
• Previous abdominal surgery that created scar tissue
• Inflammatory bowel disease like Crohn's disease
• Taking certain medications that affect intestinal movement
• Having anatomical abnormalities of the intestines

Having these risk factors doesn't mean you'll definitely develop intussusception, but being aware of them can help you recognize symptoms more quickly if they occur.

What are the possible complications of intussusception?

Without prompt treatment, intussusception can lead to serious complications that threaten your health and life. The most concerning issue is that the folded intestine can lose its blood supply, causing the tissue to die.

Here are the main complications that can develop:

• Intestinal tissue death from lack of blood flow
• Intestinal perforation (a hole in the intestine wall)
• Severe dehydration from vomiting and inability to eat
• Infection in the abdominal cavity
• Shock from fluid loss and toxins
• Sepsis (life-threatening body-wide infection)

These complications typically develop within 24 to 72 hours if the intussusception isn't corrected. This is why getting medical care quickly is so important - early treatment can prevent all of these serious problems.

In rare cases, even after successful treatment, some people may experience ongoing digestive issues or develop adhesions (scar tissue) that could cause future intestinal problems.

How is intussusception diagnosed?

Doctors typically start with a physical examination and medical history to understand your symptoms. They'll gently feel your abdomen to check for the characteristic sausage-shaped mass and listen for abnormal bowel sounds.

The most common diagnostic test is an ultrasound of the abdomen. This painless imaging test can show the telescoped intestine and confirm the diagnosis in most cases, especially in children.

Other tests your doctor might use include:

• CT scan for detailed images of the intestines
• X-rays to look for signs of blockage
• Barium or air enema, which can sometimes treat the condition while diagnosing it
• Blood tests to check for infection or dehydration

In some cases, the diagnostic test itself can fix the problem. An air enema or barium enema creates pressure that can push the folded intestine back into its normal position, especially in children.

What is the treatment for intussusception?

Treatment depends on several factors including your age, how long you've had symptoms, and whether complications have developed. The goal is to unfold the intestine and restore normal function as quickly as possible.

For children, doctors often try non-surgical treatment first. An air enema or barium enema uses controlled pressure to gently push the folded intestine back into place. This works successfully in about 80% of childhood cases when done within the first 24 hours.

Surgical treatment may be necessary when:

• Non-surgical methods don't work
• Symptoms have been present for more than 24 hours
• There are signs of intestinal damage
• The patient is an adult (surgery is usually the first choice)
• Complications like perforation have developed

During surgery, the surgeon gently manipulates the intestine back into its normal position. If any intestinal tissue has died, that section may need to be removed and the healthy ends reconnected.

After treatment, most people recover completely with no long-term effects. Hospital stays are typically short, ranging from 1 to 3 days depending on the treatment method used.

How to manage recovery at home?

Recovery care focuses on getting your digestive system back to normal function and preventing complications. Your doctor will give you specific instructions based on the treatment you received.

For the first few days after treatment, you'll likely start with clear liquids and gradually advance to regular foods as your intestines start working normally again. This might include broth, water, and electrolyte solutions before moving to soft foods.

Important home care steps include:

• Following your doctor's feeding instructions carefully
• Watching for signs of recurring symptoms
• Taking prescribed medications as directed
• Keeping surgical incisions clean and dry if you had surgery
• Staying hydrated with approved fluids
• Getting plenty of rest to support healing

Contact your healthcare provider immediately if you notice recurring abdominal pain, vomiting, fever, or any signs that suggest the intussusception has returned. Most people feel back to normal within a week or two.

How should you prepare for your doctor appointment?

If you suspect intussusception, this is typically an emergency situation that requires immediate medical attention rather than a scheduled appointment. However, being prepared can help medical staff provide the best care quickly.

Write down or remember key information about the symptoms, including when they started, how severe they are, and what makes them better or worse. Note any recent illnesses, medications, or changes in eating habits.

Bring important information with you:

• List of current medications and dosages
• Medical history, especially previous abdominal surgeries
• Insurance information and identification
• Contact information for your regular doctor
• Details about when symptoms started and their pattern

If this is happening to your child, try to stay calm and comforting. Bring comfort items like a favorite toy or blanket if possible. Having another adult with you can be helpful for support and to help communicate with medical staff.

What's the key takeaway about intussusception?

Intussusception is a serious but treatable condition where part of the intestine folds into itself, creating a blockage. Quick recognition and treatment are crucial for the best outcomes and to prevent complications.

The most important thing to remember is that severe abdominal pain that comes in waves, especially with vomiting or blood in the stool, needs immediate medical attention. Don't wait to see if symptoms improve - early treatment is much more effective and less invasive.

While intussusception sounds frightening, most people who receive prompt treatment recover completely with no long-term effects. The key is recognizing the symptoms and getting medical care quickly.

Trust your instincts as a parent or when evaluating your own symptoms. If something feels seriously wrong with abdominal pain, it's always better to seek medical evaluation than to wait and see.