title: Unilateral predominance of abnormal movements: A characteristic feature of the pediatric anti-NMDA receptor encephalitis?
abstract: Anti-NMDA receptor encephalitis is a treatable autoimmune disease characterized by cognitive, motor and psychiatric features that primarily affects young adults and children. We present a case of a 7-year-old boy with asymmetrical (mainly right hemibody) and abnormal polymorphic movements without concomitant scalpictal EEG changes but had background slowing predominating over the left hemisphere. This report illustrates previous descriptions of asymmetric presentation of abnormal movements in pediatric anti-NMDA receptor encephalitis and emphasizes the importance of video-EEG interpreted within the overall clinical context, to differentiate epileptic from non-epileptic abnormal movements in patients with autoimmune encephalitis.
authors.affiliation: Department of Epilepsy, Neurocentro, Pereira, Colombia.
authors.forename: Vanessa
authors.initials: V
authors.lastname: Benjumea-Cuartas
authors.affiliation: Department of Clinical Neurophysiology, Necker-Enfants Malades Hospital, APHP, Paris, France; INSERM U1129, Paris, France; Paris Descartes University, Sorbonne Paris Cité; CEA, Gif sur Yvette, France.
authors.forename: Monika
authors.initials: M
authors.lastname: Eisermann
authors.affiliation: Reference Center for Rare Epilepsies, APHP, Necker-Enfants Malades Hospital, Paris, France.
authors.forename: Hina
authors.initials: H
authors.lastname: Simonnet
authors.affiliation: Reference Center for Rare Epilepsies, APHP, Necker-Enfants Malades Hospital, Paris, France.
authors.forename: Marie
authors.initials: M
authors.lastname: Hully
authors.affiliation: INSERM U1129, Paris, France; Paris Descartes University, Sorbonne Paris Cité; CEA, Gif sur Yvette, France; Department of Pediatric Neurology, APHP, Necker-Enfants Malades Hospital, Paris, France; Reference Center for Rare Epilepsies, APHP, Necker-Enfants Malades Hospital, Paris, France.
authors.forename: Rima
authors.initials: R
authors.lastname: Nabbout
authors.affiliation: Reference Center for Rare Epilepsies, APHP, Necker-Enfants Malades Hospital, Paris, France.
authors.forename: Isabelle
authors.initials: I
authors.lastname: Desguerre
authors.affiliation: Department of Clinical Neurophysiology, Necker-Enfants Malades Hospital, APHP, Paris, France; INSERM U1129, Paris, France; Paris Descartes University, Sorbonne Paris Cité; CEA, Gif sur Yvette, France.
authors.forename: Anna
authors.initials: A
authors.lastname: Kaminska
keywords: Abnormal movements; Anti-NMDA receptor encephalitis; CSF, cerebrospinal fluid; CT, computed tomography; EEG, electroencephalogram; IV, intravenous; MRI, magnetic resonance imaging; NMDA, N-Methyl-d-aspartate; Video-EEG