Spectrum and Evolution of Movement Disorder Phenomenology in a Pediatric Powassan Encephalitis Case Series

Author:

Yang, K, Lindsay, R, Quiroz, V, Srouji, R, and Ebrahimi-Fakhari, D

Publication type:

Journal Article

Publication date:

2024-10

Journal/Series title:

Mov Disord Clin Pract

URL:

https://movementdisorders.onlinelibrary.wiley.com/doi/10.1002/mdc3.14245

Abstract:

We present 3 cases of pediatric Powassan encephalitis, highlighting the diverse and evolving movement disorders associated with this disease. We observed subcortical myoclonus and progressive generalized dystonia (patient 1), transient dyskinesias and refractory focal dystonia (patient 2), and generalized dystonia evolving into chorea and lingual dyskinesias (patient 3). One patient exhibited multifocal vasculitis on magnetic resonance imaging angiography, a novel finding.