ArticleEpilepsy & behavior reports2023
Anti-NMDA receptor encephalitis in a 73-year-old female with secondary progressive multiple sclerosis: A case report.
Article in Epilepsy & behavior reports, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Anti-NMDA receptor (Anti-NMDAR) encephalitis is an autoimmune disease that presents with diverse symptoms. Since literature is scarce on the overlap with multiple sclerosis (MS), this report aims to elucidate the distinctive clinical presentation and diagnostic challenges of anti-NMDAR encephalitis in MS patients. A 73-year-old woman with secondary progressive multiple sclerosis, after experiencing status epilepticus and subsequent non-convulsive status epilepticus, presented with neuropsychiatric symptoms and autonomic nervous dysfunction. Notably, the patient had not received any immunomodulatory therapy. The clinical picture together with diagnostics (MRI, EEG, cerebro-spinal fluid) let us suspect HSV-meningoencephalitis and empirically treat the patient with IV acyclovir. Due to a lack of clinical improvement, we reconsidered the diagnosis and found the diagnostic criteria for autoimmune encephalitis to be met. Antibodies in blood and CSF were positive and we diagnosed the patient with anti-NMDAR encephalitis. The patient responded well to IV prednisolone treatment, leading to a stable outcome in a six-month follow-up. This case highlights the difficulties in diagnosing anti-NMDAR encephalitis in patients with multiple sclerosis. The presence of epileptic seizures can serve as a crucial diagnostic indicator to distinguish between an MS relapse and an overlapping disease. Compared to patients with other demyelinating diseases, patients with overlapping MS appear to have a higher risk of motor seizures.
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