Postinfectious Manifestation of Wilson's Disease in COVID-19 Presenting as Writer's Cramp: A Case Report.

Wilson's disease (WD) is a neurometabolic disorder of copper metabolism with varied neurological presentations. COVID-19 has been associated with a multitude of multisystemic involvement, especially nervous system due to direct involvement, systemic inflammation, and immune-mediated phenomena. Movement disorders, however, represent a small domain of COVID-19 illness. A 23-year-old male developed behavioral changes, writer's cramp, and other neuropsychiatric symptoms following a COVID-19 infection, leading to a diagnosis of WD. Examination revealed Kayser-Fleischer rings and brain imaging abnormalities. Diagnosis was confirmed by low ceruloplasmin levels, elevated 24 h urine copper, and genetic testing. This case highlights the postinfectious manifestations of WD and its rare presentation as a writer's cramp.