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Real members of myPBCteam have posted questions and answers that support our community guidelines, and should not be taken as medical advice. Looking for the latest medically reviewed content by doctors and experts? Visit our resource section.
https://onlinelibrary.wiley.com/doi/10.1111/apt.13797
September 2, 2025
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PBC can affect brain function in several ways. About 30-50% of people with PBC experience cognitive issues and fatigue, which significantly impact quality of life. Brain fog and cognitive dysfunction are common symptoms that often occur together.

The condition can affect the brain through changes in neurosteroids - Show Full Answer

PBC can affect brain function in several ways. About 30-50% of people with PBC experience cognitive issues and fatigue, which significantly impact quality of life. Brain fog and cognitive dysfunction are common symptoms that often occur together.

The condition can affect the brain through changes in neurosteroids - chemicals that help regulate brain function. When these become imbalanced, particularly a substance called allopregnanolone, it can lead to:

• Memory problems
• Severe fatigue
• Poor sleep
• Mood changes Many myPBCteam members report experiencing symptoms like:
• Getting tongue-tied during conversations
• Difficulty remembering significant life events
• Trouble remembering steps at work
• Problems with daily tasks requiring focus

If you're experiencing cognitive symptoms, it's important to discuss them with your hepatologist. They can help determine if the symptoms are related to PBC progression or medication side effects and adjust your treatment plan accordingly.

September 2, 2025

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