Benign nocturnal alternating hemiplegia of childhood: Six patients and long-term follow-up

Benign familial nocturnal alternating hemiplegia of childhood refers to rec urrent attacks of hemiplegia arising from sleep, described in young childre n without neurologic or mental impairment. It is probably migraine related. The authors report two unrelated patients with nocturnal attacks starting at 22 and 31 months, followed by daytime episodes in one. The authors confi rm the benign course of this disorder. It is distinct from the classic mali gnant form of alternating hemiplegia of childhood.