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Updated: Jan 31, 2026

Author Spotlight: Exploring Non-Motor Symptoms in Parkinson's Disease
Published on: September 22, 2023
NMDAR encephalitis presenting as akinesia in a patient with Parkinson disease
Matteo Gastaldi1, Carla Arbasino2, Carlo Dallocchio2
1Neuroimmunology Laboratory, IRCCS Mondino Foundation, Pavia, Italy.
Abstract:
We describe the case of a woman with Parkinson disease who developed an N-methyl-d-aspartate receptor antibody-mediated encephalitis. As a novelty, the encephalitis presentation mimicked a worsening of the pre-existing extrapyramidal syndrome, manifesting mainly as severe bradykinesia and, eventually, akinesia. Brain MRI was normal, whereas cerebrospinal fluid (CSF) analysis disclosed unique-to-CSF oligoclonal bands. Prompt identification and timely immunotherapy led to a complete recovery.
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