A tremor of the wrist when the wrist is extended (dorsiflexion), sometimes said to resemble a bird flapping its wings. Asterixis is seen most often in drowsy or stuporous patients with metabolic encephalopathies, especially in decompensated cirrhosis or acute hepatic failure. It can also be a feature of Wilson’s disease.
Involuntary, jerking muscular movements.
Gross, involuntary, jerking tremor of the hand; also called flapping tremor.
Abnormal muscle tremor consisting of involuntary jerking movements, especially in the hands, but also seen in the tongue and feet. It may be due to various diseases, but is usually found in patients with diseases of the liver.