cognitive disorder delirium PMID:15876360 SCTID:2776000 MONDO:OTAR EFO:0009267 MONDO:equivalentTo http://purl.obolibrary.org/obo/mondo/releases/2024-07-02/mondo.owl OBS syndrome MONDO:EFO MEDGEN:41445 A disorder characterized by confusion; inattentiveness; disorientation; illusions; hallucinations; agitation; and in some instances autonomic nervous system overactivity. It may result from toxic/metabolic conditions or structural brain lesions. (From Adams et al., Principles of Neurology, 6th ed, pp411-2) MONDO:MEDGEN UMLS:C0011206 ICD9:293.0 MESH:D003693 organic brain syndrome MONDO:0045057 MEDGEN:41445 NCIT:C2981