ISSN: 1230-2813
Advances in Psychiatry and Neurology/Postępy Psychiatrii i Neurologii
Bieżący numer Archiwum Artykuły zaakceptowane O czasopiśmie Rada naukowa Bazy indeksacyjne Prenumerata Kontakt Zasady publikacji prac
SCImago Journal & Country Rank
1/2020
vol. 29
 
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Opis przypadku

Differentiation of the first psychotic episode and autoimmune encephalitis with anti-NMDA receptor antibodies, using the EEG findings – case report and literature review

Adam S. Hirschfeld
1
,
Daniel Lubiński
1
,
Łukasz Szumerowicz
1

1.
Neurology Ward, The St. John Paul II HCP Medical Centre, Poznan, Poland
Adv Psychiatry Neurol 2020; 29 (1): 67-73
Data publikacji online: 2020/04/27
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Purpose
The first-time psychotic incident is a diagnostic challenge due to the lack of definite tests that initially verify the underlying cause. Differential diagnosis should include autoimmune encephalitis with anti-NMDA receptors antibodies (NMDARE). The waiting time for the antibodies determination, being the only method of confirmation, may exceed several days. The article presents the capability of electroencephalographic study (EEG) to strengthen the NMDARE suspicion.

Case description
In a 19-year-old healthy woman sudden behavioural changes occurred. Initially, psychotic episode was diagnosed. Severity of the symptoms and no reaction to the treatment determined further diagnostics. Based on clinical symptoms and EEG, NMDARE was diagnosed and adequate treatment initiated. Antibody assay confirmed this diagnosis.

Comment
The presence of extreme delta brush in the EEG with the clinical suspicion of NMDARE allows to accelerate therapy in anticipation of antibodies determination. The EEG can be a valuable diagnostic tool for differential diagnosis, especially in the first psychotic episode.

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