sleep disorder http://id.loc.gov/authorities/subjects/sh85123404 http://purl.bioontology.org/ontology/MEDDRA/10013268 http://purl.bioontology.org/ontology/SNOMEDCT/39898005 http://purl.obolibrary.org/obo/DOID_535 http://purl.obolibrary.org/obo/NCIT_C3376 https://en.wikipedia.org/wiki/Category:Sleep_disorders https://en.wikipedia.org/wiki/Sleep_disorder https://www.wikidata.org/wiki/Q177190 RC547-RC549 A disorder of mental health that involves disruption of sleep patterns. disorder of sleep disorder sleep non-organic sleep disorder sleep disorder, unspecified sleep disorders sleep disorders and disturbances sleep wake disorder somnipathy disorder mental disorder