The best replacement for chorea is athetosis.

The best alternatives to chorea are rated as following:
★★★★★  athetosis
★★★  tremor
★★  ballismus
★★  myoclonus
★★  tics
★★  dystonia
★★  dyskinesia
★★  st vitus dance
★  ataxia
★  tardive dyskinesia
★  athetoid
★  huntington's disease
  ballism

Your alternative for chorea is not listed? Suggest!
Speaking about chorea, one probably shouldn't forget about rheumatic fever.

Other search terms related to chorea and their ratings are:
★★★★★ rheumatic fever
★ huntington disease
★ athetosis
You have in mind a companion for chorea and it is not yet here? Propose!



Google Trends

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chorea
athetosis
tremor