Narcolepsy with and without cataplexy, idiopathic hypersomnia with and without long sleep time: a cluster analysis

Cluster analysis confirmed that narcolepsy type 1 and polysymptomatic hypersomnia are independent sleep disorders. People who were initially diagnosed with Nw/oC and IHw/oLST formed a single cluster, referred to as “combined monosymptomatic hypersomnia/narcolepsy type 2.”