Early-onset progressive encephalopathy with migrant continuous myoclonus

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A rare disorder characterized by early-onset progressive encephalopathy with migrant continuous myoclonus. Three cases have been reported. The focal continuous myoclonus appeared during the first months of life. Prolonged bilateral myoclonic seizures and generalized tonic-clonic seizures occurred later. Subsequently a progressive encephalopathy with hypotonia and ataxia appeared. Cortical atrophy was revealed by computed tomography (CT) scan and magnetic resonance imaging (MRI). The aetiology is unknown.

Data from Orphanet are used to provide information on a disease's name, synonym(s), and overview. Reference: Access aggregated data from Orphanet at Orphadata. Orphadata: Free access data from Orphanet. © INSERM 1999. Available on http://www.orphadata.org. Data version June 2024

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