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JOURNAL ARTICLE
RESEARCH SUPPORT, NON-U.S. GOV'T
REVIEW
Refining the psychiatric syndrome of anti-N-methyl-d-aspartate receptor encephalitis.
Acta Psychiatrica Scandinavica 2018 November
OBJECTIVE: To review the psychiatric symptoms of anti-N-methyl-d-aspartate (NMDA) receptor encephalitis, in an attempt to differentiate the presentation from a primary psychiatric disorder.
METHOD: A systematic literature review of PubMed and EMBASE of all published cases of anti-NMDA receptor encephalitis was performed from inception to January 2018.
RESULTS: There were 706 cases of anti-NMDA receptor encephalitis identified. Cases were typically young (mean age 22.6 years, SD 14.8), female (F : M ratio 3.5 : 1) and presented with significant behavioural disturbance. Reported behaviour was most commonly severe agitation and aggression, abnormal speech, and catatonia. Psychosis occurred in 45.8% of cases. Investigation results were inconsistent (MRI abnormal in 35.6%, EEG abnormal in 83.0%) and non-specific. Psychiatric treatment often required multiple psychotropics, and there may be increased risk of significant side-effects such as neuroleptic malignant syndrome. Prognosis was usually good; however, cognitive and behavioral symptoms remained prominent during recovery, and psychiatrist involvement was required in this period.
CONCLUSION: The presentation of anti-NMDA receptor encephalitis is variable. However, there are often psychiatric features which are atypical to a primary psychiatric illness, such as severe agitation, speech abnormalities, and catatonia, which may help early identification.
METHOD: A systematic literature review of PubMed and EMBASE of all published cases of anti-NMDA receptor encephalitis was performed from inception to January 2018.
RESULTS: There were 706 cases of anti-NMDA receptor encephalitis identified. Cases were typically young (mean age 22.6 years, SD 14.8), female (F : M ratio 3.5 : 1) and presented with significant behavioural disturbance. Reported behaviour was most commonly severe agitation and aggression, abnormal speech, and catatonia. Psychosis occurred in 45.8% of cases. Investigation results were inconsistent (MRI abnormal in 35.6%, EEG abnormal in 83.0%) and non-specific. Psychiatric treatment often required multiple psychotropics, and there may be increased risk of significant side-effects such as neuroleptic malignant syndrome. Prognosis was usually good; however, cognitive and behavioral symptoms remained prominent during recovery, and psychiatrist involvement was required in this period.
CONCLUSION: The presentation of anti-NMDA receptor encephalitis is variable. However, there are often psychiatric features which are atypical to a primary psychiatric illness, such as severe agitation, speech abnormalities, and catatonia, which may help early identification.
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