People who have fulminant hepatitis typically develop the symptoms seen in viral hepatitis and then rapidly (within hours, days, or occasionally weeks) develop severe, often life-threatening liver failure.
Symptoms of severe liver failure include confusion, extreme irritability, altered consciousness (usually leading to unconsciousness or coma), blood-clotting defects, and buildup of fluid in the abdominal cavity, arms, and legs.
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WebMD Medical Reference from Healthwise