Differential diagnoses * Pelizaeus–Merzbacher disease * Pantothenate kinase-associated neurodegeneration * Ramsay Hunt syndrome * Huntington's disease * Striatonigral degeneration * Lesch–Nyhan syndrome * Systemic lupus erythematosus * Lyme disease * Torticollis * Multiple system atrophy * Tourette syndrome and other tic disorders * Neuroacanthocytosis * Viral encephalitis * Neuronal ceroid lipofuscinosis * Wilson's disease * Olivopontocerebellar atrophy * Familial paroxysmal<unk> athetosis * Benign hereditary<unk> <unk>  can also be a manifestation of drug toxicity (for example, anticonvulsants, antiparkinson agents, neuroleptics, steroids, and estrogen), or a result of an infectious disease such as meningovascular syphilis, Lyme disease, viral encephalitis, and many others.
Chorea gravidarum
Encephalitis lethargica
Hydrops fetalis
Tetanus
Epidemic dropsy
Status dystonicus
Prurigo gestationis
Asclepiades of Bithynia