<prompt> Flapping tremors are seen in all EXCEPT:Hepatic encephalopathyUremiaThyrotoxicosisCo, narcosis  <response>: Thyrotoxicosis REF: Harrisons 17ed p chapter 295, Asterixis also called the flapping tremor, or liver flap is a tremor of the wrist when the wrist is extended dorsiflexion, sometimes said to resemble a bird flapping its wings. Usually there are brief, arrhythmic interruptions of sustained voluntary muscle contraction causing brief lapses of posture, with a frequency of 3-5 Hz. It is bilateral, but may be asymmetric. Asterixis flapping tremor is found in: Hepatic encephalopathy Acute hepatic failure Metabolic encephalopathy Renal failure and azotemia Carbon dioxide toxicity Wilsons disease 