nar·co·lep·sy 
(närkə-lĕp′sē)
(närkə-lĕp′sē)n. pl. nar·co·lep·sies
A disorder characterized by sudden and uncontrollable, though often brief, attacks of deep sleep, sometimes accompanied by paralysis and hallucinations.
nar′co·leptic (-lĕptĭk) adj.