Clinical commentary on "Paroxysmal kinesigenic dyskinesia-like phenotype in multiple sclerosis" and "Secondary paroxysmal dyskinesia in multiple sclerosis: Clinical-radiological features and treatment. Case report of seven patients".

This clinical commentary discusses the phenomenology and treatment of paroxysmal dyskinesia in patients with multiple sclerosis. It calls for a consensus on the definition as well as for larger studies to better understand this unusual clinical association.