Figure 1.
Spectrum of episodic neurological disorders occurring with mutations in the genes associated with paroxysmal dyskinesias. The underlying colour reflects the presumed cortical (blue) vs subcortical (red) origin of the clinical manifestations. PNKD; paroxysmal non-kinesigenic dyskinesias; PKD: paroxysmal kinesigenic dyskinesias; ICCA: infantile convulsions with choreoathetosis; BFIS: benign familial infantile seizures; PED: paroxysmal exercise-induced dyskinesias; GTCS: generalized tonic-clonic seizures. * The nature of the movement disorder occurring with SCN8A mutation has been questioned (see text for details).