In the authors’ experience, PNKD episodes are frequently mistaken for seizures due to background epileptiform activity on EEG or co‐morbid epileptic seizures, which are also prevalent in KCNMA1‐linked channelopathy,2 despite the lack of confirmatory abnormalities on scalp EEG during the dyskinesias. This evidence concerns the gene KCNMA1 and drug-induced dyskinesia.