PMID- 26089673 OWN - NLM STAT- PubMed-not-MEDLINE DCOM- 20150619 LR - 20200930 IS - 1176-6328 (Print) IS - 1178-2021 (Electronic) IS - 1176-6328 (Linking) VI - 11 DP - 2015 TI - Anti-N-methyl-d-aspartate receptor encephalitis in a patient with a 7-year history of being diagnosed as schizophrenia: complexities in diagnosis and treatment. PG - 1437-42 LID - 10.2147/NDT.S82930 [doi] AB - Anti-N-methyl-d-aspartate receptor (NMDAR) encephalitis is a form of autoimmune encephalitis associated with antibodies against the NR1 subunits of NMDARs. Although new-onset acute prominent psychotic syndromes in patients with NMDAR encephalitis have been well documented, there is a lack of case studies on differential diagnosis and treatment of anti-NMDAR encephalitis after a long-term diagnostic history of functional psychotic disorders. The present study reports an unusual case of anti-NMDAR encephalitis. The patient had been diagnosed with schizophrenia 7 years earlier, and was currently hospitalized for acute-onset psychiatric symptoms. The diagnosis became unclear when the initial psychosis was confounded with considerations of other neurotoxicities (such as neuroleptic malignant syndrome). Finally, identification of specific immunoglobulin G NR1 autoantibodies in the cerebrospinal fluid and greater effectiveness of immunotherapy over antipsychotics alone (which has been well documented in anti-NMDAR encephalitis) indicated the diagnosis of anti-NMDAR encephalitis in this case. Based on the available evidence, however, the relationship between the newly diagnosed anti-NMDAR encephalitis and the seemingly clear, long-term history of schizophrenia in the preceding 7 years is uncertain. This case report illustrates that psychiatrists should consider anti-NMDAR encephalitis and order tests for specific immunoglobulin G NR1 autoantibodies in patients presenting with disorientation, disturbance of consciousness, cognitive deficit, dyskinesia, autonomic disturbance, or rapid deterioration, even with a seemingly clear history of a psychiatric disorder and no specific findings on routine neuroimaging, electroencephalography, or cerebrospinal fluid tests in the early stage of the illness. FAU - Huang, Chaohua AU - Huang C AD - Mental Health Center, West China Hospital, Sichuan University, Chengdu, Sichuan, People's Republic of China ; State Key Laboratory of Biotherapy, Psychiatric Laboratory, West China Hospital, Sichuan University, Chengdu, Sichuan, People's Republic of China ; Mental Health Center, Affiliated Hospital of Luzhou Medical College, Luzhou, People's Republic of China. FAU - Kang, Yukun AU - Kang Y AD - Mental Health Center, West China Hospital, Sichuan University, Chengdu, Sichuan, People's Republic of China. FAU - Zhang, Bo AU - Zhang B AD - Mental Health Center, West China Hospital, Sichuan University, Chengdu, Sichuan, People's Republic of China. FAU - Li, Bin AU - Li B AD - Mental Health Center, West China Hospital, Sichuan University, Chengdu, Sichuan, People's Republic of China. FAU - Qiu, Changjian AU - Qiu C AD - Mental Health Center, West China Hospital, Sichuan University, Chengdu, Sichuan, People's Republic of China. FAU - Liu, Shanming AU - Liu S AD - Mental Health Center, West China Hospital, Sichuan University, Chengdu, Sichuan, People's Republic of China. FAU - Ren, Hongyan AU - Ren H AD - Mental Health Center, West China Hospital, Sichuan University, Chengdu, Sichuan, People's Republic of China ; State Key Laboratory of Biotherapy, Psychiatric Laboratory, West China Hospital, Sichuan University, Chengdu, Sichuan, People's Republic of China. FAU - Yang, Yanchun AU - Yang Y AD - Mental Health Center, West China Hospital, Sichuan University, Chengdu, Sichuan, People's Republic of China. FAU - Liu, Xiehe AU - Liu X AD - Mental Health Center, West China Hospital, Sichuan University, Chengdu, Sichuan, People's Republic of China. FAU - Li, Tao AU - Li T AD - Mental Health Center, West China Hospital, Sichuan University, Chengdu, Sichuan, People's Republic of China ; State Key Laboratory of Biotherapy, Psychiatric Laboratory, West China Hospital, Sichuan University, Chengdu, Sichuan, People's Republic of China ; Mental Health Education Center, Sichuan University, Chengdu, Sichuan, People's Republic of China. FAU - Guo, Wanjun AU - Guo W AD - Mental Health Center, West China Hospital, Sichuan University, Chengdu, Sichuan, People's Republic of China ; State Key Laboratory of Biotherapy, Psychiatric Laboratory, West China Hospital, Sichuan University, Chengdu, Sichuan, People's Republic of China. LA - eng PT - Case Reports DEP - 20150611 PL - New Zealand TA - Neuropsychiatr Dis Treat JT - Neuropsychiatric disease and treatment JID - 101240304 PMC - PMC4468991 OTO - NOTNLM OT - anti-N-methyl-d-aspartate receptor encephalitis OT - differential diagnosis OT - schizophrenia OT - treatment EDAT- 2015/06/20 06:00 MHDA- 2015/06/20 06:01 PMCR- 2015/06/11 CRDT- 2015/06/20 06:00 PHST- 2015/06/20 06:00 [entrez] PHST- 2015/06/20 06:00 [pubmed] PHST- 2015/06/20 06:01 [medline] PHST- 2015/06/11 00:00 [pmc-release] AID - ndt-11-1437 [pii] AID - 10.2147/NDT.S82930 [doi] PST - epublish SO - Neuropsychiatr Dis Treat. 2015 Jun 11;11:1437-42. doi: 10.2147/NDT.S82930. eCollection 2015.