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Published on: 7/4/2025

Why might my bladder hurt when I poop?

Bladder pain during bowel movements may be due to the way the nerves from the colon and bladder interact, or because of conditions that affect both organs.

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Explanation

When you feel bladder pain while pooping, it may be because the nerves that go to your bladder and colon can affect each other. This is called cross-organ sensitization, and it means that when your colon is active, it can make your bladder feel pain too.

Here are some possible reasons:

  1. Cross-Organ Sensitization: The nerves of the bladder and colon can talk to each other. If one organ is irritated, it can cause pain in the other. This could happen if you have conditions like irritable bowel syndrome or interstitial cystitis.

  2. Stool-Based Biomarkers: Some studies suggest that certain markers in your stool could be linked to bladder pain. This means that changes in your gut could be related to how your bladder feels.

  3. Nerve Pain: Sometimes, nerve pain from your lower back can cause pain during both urination and bowel movements. This is because the same nerves are involved in both actions.

If you have ongoing pain, it is important to talk to a healthcare provider to find out what is causing it and how you can feel better.

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