title: Focal EEG slowing and chorea: electroclinical clues to the diagnosis of anti-NMDAR encephalitis.
abstract: Variations in clinical presentation can lead to delays in the diagnosis and initiation of treatment of anti-N-methyl-D-aspartate receptor encephalitis. Most patients have an EEG study performed early in the course of their illness. Although not specific, there may be clues in the electroclinical features that should alert clinicians and electroencephalographers to the possibility of this diagnosis. This case is a reminder that anti- anti-N-methyl-D-aspartate receptor encephalitis may present initially with a movement disorder as the sole symptom, without features of an encephalopathy. In addition, it adds to the growing body of evidence that recognition of certain electroclinical clues may shorten the time to diagnosis. [Published with video sequence].
authors.affiliation: Department of Clinical Neurophysiology, Poole Hospital NHS Foundation Trust, Poole.
authors.forename: Abena
authors.initials: A
authors.lastname: Osei-Lah
authors.affiliation: Department of Clinical Neurophysiology, Poole Hospital NHS Foundation Trust, Poole.
authors.forename: Emma
authors.initials: E
authors.lastname: Durrant
authors.affiliation: Department of Child Health, Poole Hospital NHS Foundation Trust, Poole.
authors.forename: Munir
authors.initials: M
authors.lastname: Hussain
authors.affiliation: Department of Child Health, Poole Hospital NHS Foundation Trust, Poole, Department of Child Health, University Hospital Southampton, Southampton, UK.
authors.forename: Fenella
authors.initials: F
authors.lastname: Kirkham
mesh_terms: D000208:Acute Disease; D060426:Anti-N-Methyl-D-Aspartate Receptor Encephalitis / Q000150:complications / Q000175:diagnosis / Q000503:physiopathology; D002648:Child; D002819:Chorea / Q000175:diagnosis / Q000209:etiology / Q000503:physiopathology; D003937:Diagnosis, Differential; D004568:Electrodiagnosis; D004569:Electroencephalography; D005260:Female; D006801:Humans
keywords: acute dyskinesia; anti-NMDAR encephalitis; chorea