Ileostomy and stomach cramps: Causes and remedies

What is an ileostomy?

Before we go any further, let’s understand what an ileostomy is in the first place. An ileostomy is a surgically created opening where the end of the small bowel (ileum) is brought through the abdominal wall to the outside of the body. Output from the bowel is collected in an ostomy bag.

Some reasons for having an ileostomy are:

• Crohn's disease
• ulcerative colitis
• bowel cancer
• severe bowel damage

After surgery, the body needs time to adjust. That’s why stomach cramps can be more frequent during this process.

Why are ileostomy stomach cramps so common?

As already mentioned, with an ileostomy, the small bowel is redirected directly through the abdominal wall. The large bowel, which normally draws out fluid and thickens stool, is either bypassed or removed.

This has several effects:

• output is more liquid and passes through the bowel more quickly
• the bowel reacts more sensitively to food
• there is no 'buffer' for hard-to-digest foods
• blockages can develop more easily than in people without a stoma

And as a result, intestinal cramping, bloating and stoma blockages can happen, and these often present themselves as stomach or abdominal cramps. Now, let’s have a look at some other causes.

Common causes of stomach cramps with an ileostomy

1. Stoma blockage or bowel obstruction

Again, a stoma blockage in the small bowel is one of the most common and important causes of severe cramping in the stomach with an ileostomy.

Possible triggers include:

• poorly chewed food
• high-fibre foods (e.g. asparagus, sweetcorn, mushrooms)
• nuts, seeds or skins
• adhesions (scar tissue following surgery)

Common symptoms are:

• severe, cramping abdominal pain
• a swollen or distended abdomen
• little or no stoma output
• nausea or vomiting

If you suspect a stoma blockage, seek medical help immediately.

2. Foods that are hard to digest or cause intolerance

Speaking of food, the small bowel becomes more sensitive to certain foods after an ileostomy.

Common triggers of intolerance are:

• cabbage, onions and pulses
• very fatty or heavily spiced food
• large portion sizes
• eating too quickly

Tip: Introduce new foods gradually and make sure to chew thoroughly. If you'd like to learn about eating with a stoma in general, feel free to check out this guide.

3. Infections or inflammation

Another culprit of stomach cramps with an ileostomy include gastrointestinal infections or inflammation.

Possible causes of infections or inflammation are:

• viral or bacterial infections
• inflammation of the small bowel
• pouchitis (in people with an ileal pouch): an inflammation of the surgically created ileal pouch, which is formed after removal of the large bowel and rectum (e.g. in ulcerative colitis) to allow bowel continence

These are often accompanied by fever, diarrhoea or a (significantly) increased stoma output.

4. Vitamin B12 deficiency

It is often overlooked that a vitamin B12 deficiency can also cause abdominal pain and cramping, as B12 is more commonly associated with fatigue or nerve problems.

Vitamin B12 is important for the nerves throughout the digestive tract. When levels are low, these nerves may not transmit signals correctly, which can cause the bowel to contract more rapidly or irregularly. This results in cramping pain, a feeling of pressure or a sense of fullness.

Other signs of a vitamin B12 deficiency may include:

• persistent fatigue
• difficulty concentrating
• tingling or numbness in the hands or feet
• bloating or nausea

If abdominal pain occurs without a clear cause, a vitamin B12 deficiency is worth investigating with your doctor. A simple blood test can quickly give you some clarity.

Are your stomach cramps harmless or serious? Warning signs you should know

Your ileostomy stomach cramps are usually harmless if you experience:

• mild cramps after eating
• a brief pulling sensation that passes on its own
• improvement with warmth or gentle movement

Warning signs, and please take these seriously:

• persistent or worsening pain
• no stoma output for several hours (6–8 hours)
• severe bloating
• nausea or vomiting
• fever and/or chills
• stoma turns blue, pale or becomes significantly swollen

If you experience any of these symptoms, always seek medical attention.

What helps with mild ileostomy stomach cramps?

For mild discomfort, the following may help:

• drink plenty of fluids (water, herbal tea, electrolyte drinks)
• gentle movement, such as a short walk
• warmth (a hot water bottle or warm bath)
• gentle abdominal massage
• lying on your side with your knees drawn up

If there is no improvement or the pain worsens, contact your doctor or go to hospital.

How to prevent ileostomy stomach cramps

There are some preventative measures that you can take against stomach cramps with an ileostomy: 

• eat slowly and chew thoroughly
• choose smaller portion sizes
• introduce new foods one at a time
• drink enough fluids throughout the day
• have regular check-ups with your doctor or stoma care nurse
• pay attention to any changes in your stoma

Key takeaways on stomach cramps with an ileostomy

Stomach cramps are common with an ileostomy, but they are not always a cause for concern. What matters most here is understanding the cause properly and taking warning signs seriously.

With a suitable diet, awareness of your body and timely medical advice when needed, many symptoms can be reduced or prevented altogether.

FAQ on ileostomy & stomach cramps

What causes stomach cramps with an ileostomy?

Ileostomy stomach cramps can have a number of causes. The most common causes include a partial or full stoma blockage, foods that are difficult to digest, gastrointestinal infections or inflammation, and (less commonly), a vitamin B12 deficiency. Because the large bowel is bypassed, the small bowel is more sensitive to food and more prone to cramping. If cramps are severe, persistent or accompanied by a lack of stoma output, always seek medical advice.

What are the signs of an ileostomy blockage?

The typical signs of an ileostomy blockage include severe, cramping abdominal pain, a swollen or distended stomach, significantly reduced or no stoma output, and nausea or vomiting. If you notice these signs, do not wait and seek medical help as soon as possible. A blockage that is not treated can become a serious medical situation.

How long after an ileostomy can I drive?

Most people are advised not to drive for around four to six weeks after an ileostomy operation, or until they are no longer taking prescription pain medication and can perform an emergency stop comfortably. Your surgical team will give you specific guidance based on your recovery. Always follow the advice of your healthcare professional before returning to driving.

Why does my stoma hurt when I am active?

Some discomfort or pulling around the stoma during physical activity is relatively common, especially in the weeks after surgery when the area is still healing. It can also occur if the stoma appliance does not fit well, if there is an internal stoma hernia developing, or if physical activity is increasing output rapidly. If you experience persistent or sharp pain around your stoma during activity, it is worth discussing this with your stoma care nurse or doctor to rule out any underlying cause.