Asterixis as a side effect of carbamazepine therapy.

A patient developed asterixis 13 weeks after starting a therapy with carbamazepine. Serum concentration of carbamazepine was within the therapeutic levels. Further factors which might have provoked asterixis were an impairment of pulmonary function and the combination with a neuroleptic and lithium. Since the latter risk factors had already been present for a long time, it may be assumed that the addition of carbamazepine triggered the development of asterixis.