<unk>  or PED is a rare neurological disorder characterized by sudden, transient, involuntary movements, often including repetitive twisting motions and painful posturing triggered by<unk>  or other physical exertion. PED is in the class of<unk>  dyskinesia which are a group of rare movement disorders characterized by attacks of hyperkinesia with intact consciousness. The term<unk>  indicates that the episodes are sudden and short lived and usually unpredicted, and return to normal is rapid. The number of reported cases of people with PED is very small leading to difficulty in studying and classifying this disease and most studies are limited to a very small number of test subjects.
Paroxysmal exercise-induced dystonia
Dopamine-responsive dystonia
Paroxysmal kinesigenic choreoathetosis
Potassium-aggravated myotonia
Post-encephalitic parkinsonism
Benign fasciculation syndrome
Levodopa-induced dyskinesia
Myotonia congenita