Hepatic Encephalopathy: Symptoms, Causes, Treatment

Families may notice altered sleep or concentration before the person does. Not every episode of confusion in liver disease is hepatic encephalopathy; alternative urgent causes must be considered.

Related reading: Liver cirrhosis and its complications.

Slowed thinking, behavior changes, reversed sleep patterns or flapping hand movements can progress to confusion and marked drowsiness. Mild cases may require attention testing to detect.

Accumulating substances such as ammonia contribute alongside other factors. Infection, digestive bleeding, constipation, dehydration, electrolyte changes or sedating medicines may trigger an episode.

Advanced cirrhosis or liver failure, portosystemic shunts and previous episodes increase risk. Muscle loss, infection, dehydration and some medicines can contribute.

Diagnosis is clinical, assessing liver disease and triggers while excluding infection, hypoglycemia, stroke and intoxication. An ammonia result alone neither establishes diagnosis nor measures symptom severity.

Treatment addresses the trigger and usually includes clinician-adjusted lactulose; rifaximin may be added in selected cases. Severe episodes need hospital monitoring, with transplant assessment when appropriate.

Falls, injuries, aspiration, recurrent episodes or coma can occur. Symptoms may improve with treatment, but management of underlying liver disease remains essential.

Follow treatment and monitor awareness, constipation and dehydration with family support. Do not automatically restrict protein; adequate nutrition matters. Excess laxative-related diarrhea warrants medical adjustment.