Over the past 8 years an increasing awareness of the role of mutant io
n channels in episodic diseases of humans has emerged. The importance
of these discoveries is now being extended to a growing list of membra
ne excitability disorders of the nervous system. Molecular characteriz
ation of episodic diseases that are rare and monogenic will ultimately
shed light on more common and complex disorders, such as epilepsy and
migraine. Curr Opin Neurol 11:217-226. (C) 1998 Lippincott-Raven Publ
ishers.