What is a stoma leakage?
What do we refer to when we say “stoma leakage”, and why does it happen? Stoma bag leakage happens when output finds a way past the seal between the baseplate and your skin. It might be a slow, gradual seep or a more sudden failure: either way, it can affect your skin, your confidence, and how you feel about going about your day. It's important to say upfront, though, that leaks are common, especially in the early weeks after surgery, but persistent leakage isn't something you should just put up with.
How common is a stoma leakage?
Again, a stoma leakage is very common. In fact, it’s something almost all ostomates experience at some point. Of course, that doesn't make it any less uncomfortable when it happens, but it does mean you're far from alone, and that there's a lot of experience and support out there to help you manage it.
Possible causes of stoma leakages
As for the causes of stoma leaks, there's rarely just one answer. Stoma bag leakage problems tend to come down to fit, skin condition, or output; and sometimes a combination of all three.
Changes in stoma size after surgery
In the weeks following surgery, your stoma and the surrounding area are likely to be swollen. As that swelling reduces over the first six weeks or so, the aperture (the hole in your baseplate) will need to be adjusted. Your stoma care nurse should be monitoring this with you; but if you notice your bag isn't sitting as securely as it was, it's definitely worth flagging.
Poor fit
Poor fit may be another cause of stoma leaks. If the aperture is too large, output can reach the skin around your stoma and break down the adhesive. But if it's too small, it can irritate the stoma itself. Getting the right fit is one of the most effective things you can do for leakage prevention, and it's something your stoma care nurse can help with directly.
Weight changes
Whether you've lost or gained weight, changes in your body shape can also affect how well your bag adheres. It's not unusual for this to happen, though, it just means your setup may use a review.
Uneven skin, folds or scarring
Speaking of body shapes, very few people have a perfectly flat abdomen, and skin folds, dips, creases, or scar tissue around the stoma can make it harder to get a reliable seal (e.g. Hydrocolloid seals). There are products specifically designed to help fill these contours, your stoma care nurse can advise on what's available.
Flat stoma leakage
A flush or inverted stoma sits level with or below the skin surface, which can make sealing a lot harder. Inverted stoma leakage is especially a common concern, as output doesn't have the natural direction away from the body that a more protruding stoma does. Convex baseplates and supporting accessories are often recommended in these situations; again, worth discussing with your nurse.
High or liquid output
Your output matters, too. Loose output moves faster and finds gaps more easily. If your output has suddenly become more liquid, think about whether anything has changed; this can be diet, medication, fluid intake, or a possible infection. If it doesn't settle, or you're emptying your bag much more often than usual, contact your stoma care nurse.
Moist or oily skin
As we know, adhesives need clean, dry skin to bond properly. Sweat or excess moisture under the baseplate can compromise the seal over time. Making sure your skin is thoroughly dry before applying is one of the simplest stoma leakage prevention steps you can take.
Wearing the bag too long
Every adhesive has a limit. Leaving your pouch on beyond its natural wear time means the adhesive gradually breaks down, and the risk of leakage increases. If you're noticing the edges starting to lift, it may be time for a change.
How to prevent a stoma leakage
Get the fit right
The right bag for your stoma type, the correct aperture size, and a baseplate suited to your skin and body shape: these are the foundation of reliable wear. If you're not sure whether your current setup is right for you, a stoma care nurse can reassess and suggest alternatives.
Keep the skin clean and dry
Clean the peristomal skin gently with warm water and, if needed, a mild unperfumed soap. Avoid alcohol-based wipes as they can dry out and irritate the skin over time. Pat the area dry carefully before applying a new bag and give it a moment to settle before getting dressed.
Empty before it gets too full
A good rule of thumb is to empty your drainable pouch when it's around a third to half full. A heavy pouch puts more mechanical strain on the seal and increases the risk of it giving way.
Be prepared when you're out
Remember to always carry a small kit with a couple of spare pouches, wipes, and disposal bags. It won't prevent a leak from happening, but it means you can deal with one quickly and discreetly, which makes a difference to how much it affects your day.
Think about what you're eating
Certain foods can increase gas, speed up output, or make it more liquid. Paying attention to your diet and how it affects your output can help you stay one step ahead. Your stoma care nurse or a dietitian can offer personalised guidance here.
Stoma leakage protection: Accessories that can help
Beyond the bag itself, there are a range of accessories designed to support a better seal and protect the skin:
- Barrier rings or seals can be moulded to fill skin irregularities and create a more reliable contact between the baseplate and your skin. You can also use a stoma paste for a similar function.
- Convex baseplates are especially useful for flat or inverted stomas.
- You also have ostomy belts for some extra security during physical activity. If leakage is affecting the surrounding skin, barrier creams and skin-barrier protective sprays/wipes help support your skin recovery.
If you're not already using any of these and leaks are a regular occurrence, ask your stoma care nurse whether any might help in your situation.
Bottom line on dealing with a stoma leakage
It would be dishonest not to acknowledge this. A leak (especially one in public) can feel distressing and embarrassing. Over time, the worry of it happening can lead to pulling back from activities, social situations, or even relationships. That kind of anxiety is completely understandable, but it certainly doesn't have to become your normal.
Being as prepared as possible helps. So does connecting with others who've been through it: support groups and online communities can be a useful source of both practical advice and reassurance. And if leaks are affecting your confidence or wellbeing, please do reach out to your stoma care nurse. That's exactly what they're there for.
FAQ: Stoma leakage
What should I do if my stoma is leaking?
Change your ostomy bag as soon as you can, and take the opportunity to check your skin for any irritation. Clean and dry the area thoroughly before applying a fresh pouch. If leaks are happening often, note when and how they occur and speak to your stoma care nurse as there's almost always a reason and a solution.
How can I prevent my stoma bag from leaking at night?
Applying a fresh bag before bed is a good start. Make sure your bag is emptied before you sleep and think about your sleeping position as lying on your stoma can sometimes affect the seal. If nighttime leaks are a common issue for you, your stoma care nurse may be able to suggest a higher-capacity pouch or different accessories for overnight wear.
Is it normal to have discharge even with a stoma?
Some stoma discharge around the stoma site can be normal, especially in the early weeks after surgery. But if you're noticing output consistently bypassing the bag, or skin that's regularly exposed to output, that's a sign the fit or seal needs to be looked at. Don't assume it's just something to live with, speak to your stoma care nurse.
What are stoma leaks?
A stoma leak refers to output escaping from beneath the baseplate seal and onto the surrounding skin instead of being contained within the pouch. It can happen gradually or suddenly, and can be caused by fit issues, skin conditions, high output, or simply wear time. Identifying the cause is the first step towards preventing it from happening again.