In medicine|lang=en terms the difference between tetany and chorea

is that tetany is (medicine) a condition characterized by painful muscular spasms, caused by faulty calcium metabolism while chorea is (medicine) any of the various (l) of the (l) characterized by (l) (l) movements of the face and extremities; [http://enwikipediaorg/wiki/st_vitus's_dance st vitus's dance].

As nouns the difference between tetany and chorea

is that tetany is (medicine) a condition characterized by painful muscular spasms, caused by faulty calcium metabolism while chorea is an (l) (l) (l) accompanied by a (l).