RT Journal Article SR Electronic T1 Anti-N-methyl-d-aspartate receptor encephalitis in an older patient presenting with a rapid onset of delusions and amnesia JF BMJ Case Reports JO BMJ Case Reports FD BMJ Publishing Group Ltd SP e228512 DO 10.1136/bcr-2018-228512 VO 12 IS 4 A1 Marinova, Zoya A1 Bausch-Becker, Nikolaus A1 Savaskan, Egemen YR 2019 UL http://casereports.bmj.com/content/12/4/e228512.abstract AB We present the case of a 77-year-old patient with a rapid onset of delusions, amnesia, agitation, insomnia and no previous psychiatric history, who was diagnosed with anti-N-methyl-d-aspartate receptor encephalitis. This case report highlights the importance of including autoimmune encephalitis in the differential diagnosis of older patients presenting with rapid onset psychiatric episodes.