syndromic disease recurrent hypersomnia Kleine-Levin syndrome https://rarediseases.info.nih.gov/diseases/3117/kleine-levin-syndrome https://www.malacards.org/card/kleine_levin_hibernation_syndrome GARD:0003117 Kleine-LEVIN hibernation syndrome icd11.foundation:1180849398 Kleine Levin syndrome DOID:0060165 NCIT:C84800 Orphanet:33543 EFO:1001354 OMIM:148840 Kleine-Levin syndrome UMLS:C0206085 MESH:D017593 familial Kleine-Levin syndrome MONDO:0007863 Kleine-Levin syndrome (KLS) is a rare neurological disorder of unknown origin characterized by relapsing-remitting episodes of hypersomnia in association with cognitive and behavioral disturbances. NORD:1334 MEDGEN:61511 MedDRA:10053712 familial hibernation syndrome SCTID:111488004