PBC is typically classified in stages 1 through 4, so there isn't an officially recognized "stage 0." The earliest recognized stage is stage 1.
In stage 1, the small bile ducts in the liver begin to become inflamed — this is called portal inflammation. At this point, the liver is still functioning normally, and blood work Show Full Answer
PBC is typically classified in stages 1 through 4, so there isn't an officially recognized "stage 0." The earliest recognized stage is stage 1.
In stage 1, the small bile ducts in the liver begin to become inflamed — this is called portal inflammation. At this point, the liver is still functioning normally, and blood work may not show any signs of liver damage yet.
Because the bile ducts can still transport bile, most people don't experience noticeable symptoms in stage 1. However, fatigue can occasionally appear even this early.
Here's a quick summary of what's typically happening in stage 1:
- Small bile ducts start to become inflamed
- The liver still functions normally
- Blood tests may appear normal
- No obvious symptoms in most cases
- Fatigue may occasionally occur as the only sign
It's worth noting that around 95% of people with PBC test positive for antimitochondrial antibodies (AMAs), which can be detected through a simple blood test even at this early stage — sometimes before any symptoms appear.
Since PBC can be quietly progressing without obvious signs, regular check-ins with your doctor and routine blood work are really important for catching any changes early.
August 16
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