Parastomal Hernia: Signs, Prevention, and How to Manage It

A parastomal hernia is a bulge that forms when part of the bowel pushes against the abdominal wall near your stoma, where the muscle has been weakened by the surgery. It is very common, often painless, and in most cases it is managed without an operation using a support garment, careful lifting, and a well-fitting appliance. Finding a bulge near your stoma is understandably worrying, but for most people it is a manageable part of ostomy life rather than an emergency.

This guide covers the signs, what raises the risk, how to lower it, the support options, and when to speak to your stoma nurse.

What is a parastomal hernia?

When your stoma was created, the surgeon made an opening through the abdominal muscle to bring the bowel to the surface. That opening is naturally a weaker spot. A parastomal hernia happens when the pressure inside your abdomen pushes loops of bowel against that weak area, creating a bulge under the skin around the stoma. It is one of the most common long-term effects of ostomy surgery, and the risk gradually increases with time.

What are the signs of a parastomal hernia?

The main sign is a bulge or swelling around the stoma that often appears when you stand, cough, or strain, and may flatten when you lie down. Other things you might notice:

• A lump or bulge near the stoma that grows over time.
• A dragging, aching, or full feeling around the area.
• The appliance not fitting as flat as it used to, with more leaks.
• The skin barrier struggling to stay sealed on the changed shape.

Many parastomal hernias cause few symptoms beyond the bulge and a fit challenge. Tell your stoma nurse if you notice these signs so they can check it and help you adapt.

What raises the risk of a parastomal hernia?

Some factors are outside your control, and some you can influence. Common contributors include:

• Heavy lifting and straining, especially in the early months after surgery while you heal.
• A higher body weight, which adds pressure on the abdominal wall.
• A persistent cough or constipation, both of which raise abdominal pressure.
• Weaker abdominal muscles, and simply the passage of time.

How can I lower my risk of a parastomal hernia?

You cannot remove the risk entirely, but sensible habits help, particularly in the first year. Always follow your own surgeon's and stoma nurse's advice, then keep these in mind:

• Avoid heavy lifting early on. Give the muscle time to heal, and build back gradually.
• Support your abdomen when you cough or sneeze by placing a hand or a cushion over the stoma area.
• Strengthen your core gently and progressively, ideally with exercises your stoma nurse or a physiotherapist recommends. Strong, controlled core muscles support the area.
• Keep to a healthy weight to reduce pressure on the abdominal wall.
• Ask about a support garment for activity or lifting once you are cleared to do them.

What support options are there?

Most parastomal hernias are managed conservatively rather than with surgery. The usual approaches:

• Hernia support garments. A support belt or specialized underwear applies gentle, even pressure to support the area and ease the dragging feeling. These should be fitted to you, so ask your stoma nurse to measure you and recommend the right type. A poorly fitted garment can do more harm than good.
• Adapting your appliance. As the shape around your stoma changes, your old appliance may not sit flat. Your stoma nurse can help you find a barrier and accessories that seal on the new contour.
• Surgery, in some cases. If a hernia is large, painful, causing repeated blockages, or seriously affecting quality of life, a surgeon may discuss repair. This is a decision to make with your surgical team.

Keeping a secure seal as your shape changes

One practical frustration of a parastomal hernia is that a flat, rigid seal no longer fits a changed, curved surface, so leaks become more common. A soft, moldable barrier ring flexes to fill the gaps and folds that open up around the stoma, which helps the appliance stay sealed on an uneven shape. It does not treat the hernia itself, but it can make day-to-day fit and comfort easier while you and your nurse manage the bigger picture.

If leaks have increased, our guides on why your wafer keeps leaking and how a barrier ring helps are worth a read, and how to stop peristomal skin irritation covers protecting the skin.

When should you see your stoma nurse or doctor?

Speak to your stoma nurse if you notice a new or growing bulge, more frequent leaks, or a persistent dragging feeling, so they can assess it and help you adapt. Seek urgent medical care if the bulge becomes hard, very painful, or red, or if you have a blockage with nausea, vomiting, no output, or severe cramping. A hernia that becomes stuck (obstructed or strangulated) is uncommon but is a medical emergency.

Frequently asked questions

Is a parastomal hernia dangerous?

Most are not dangerous and are managed without surgery. The main concerns are leaks, discomfort, and appearance. Rarely, a hernia can become obstructed or strangulated, which is an emergency, so seek urgent care if the bulge becomes hard, very painful, or red, or you cannot pass output and feel sick.

Can a parastomal hernia be fixed without surgery?

Often, yes. Many people manage well with a fitted hernia support garment, careful lifting, weight management, and an appliance that seals on the changed shape. Surgery is usually reserved for hernias that are large, painful, or causing repeated problems.

What exercises can I do with a parastomal hernia?

Gentle, progressive core work guided by your stoma nurse or a physiotherapist is usually encouraged, while heavy lifting and intense straining are limited. Always get personal advice first, since the right plan depends on your hernia and overall health.

Why is my ostomy bag leaking more since my hernia?

A hernia changes the contour around your stoma, so a flat appliance no longer sits evenly and gaps open at the edges. A moldable barrier ring helps fill those gaps, and your stoma nurse can suggest products suited to the new shape.

Can I prevent a parastomal hernia?

You cannot guarantee prevention, but you can lower the risk by avoiding heavy lifting early after surgery, supporting your abdomen when you cough, building core strength gradually, keeping to a healthy weight, and asking about a support garment for activity.

Written by the Adhereskin Care Team. This guide is general information, not medical advice. A parastomal hernia should be assessed by your stoma nurse or doctor, and any support garment should be fitted by a professional. Seek urgent care for a hernia that becomes hard, very painful, or obstructed.