sleep disorder parasomnia http://purl.bioontology.org/ontology/MEDDRA/10033920 http://purl.bioontology.org/ontology/MEDDRA/10061910 http://purl.bioontology.org/ontology/MESH/D020447 http://purl.bioontology.org/ontology/SNOMEDCT/58690002 http://purl.obolibrary.org/obo/HP_0025234 http://purl.obolibrary.org/obo/NBO_0000493 http://purl.obolibrary.org/obo/NCIT_C94836 https://en.wikipedia.org/wiki/Category:Parasomnias https://en.wikipedia.org/wiki/Parasomnia https://www.wikidata.org/wiki/Q559869 G47.5 A group of sleep disorders causing disruption of sleep. Representative examples include nightmare disorders, sleep terror disorders, sleepwalking, and restless leg syndrome. Movements or behaviors associated with sleep, sleep stages, or partial arousals from sleep that may impair sleep maintenance. Parasomnias are generally divided into four groups: arousal disorders, sleep-wake transition disorders, parasomnias of REM sleep, and nonspecific parasomnias. parasomnias