Minimal hepatic encephalopathy: natural history, impact on daily functioning, and role of treatment.

Cirrhosis of liver is often complicated by minimal hepatic encephalopathy (mHE), which is detected by neuropsychiatric and neurophysiological tests. mHE develops more commonly in cirrhotics with severe liver disease and in those with esophageal and gastric varices. On follow up, these patients more often develop overt encephalopathy as compared to cirrhotics without mHE. mHE may affect daily activities like sleep, driving ability, alertness, social interaction, and communication. It is probably also an independent predictor of survival. The most practical treatment strategy for mHE has not been established; however, it can be treated as effectively as overt encephalopathy with similar agents. Treatment improves mHE in terms of psychometric tests, but improvement in daily functioning has not been well documented.