[tsimionescu]

Looking at this example of Sydenham chorea (which seems to be the underlying condition behind the symptom named St Vitus' dance?), I could see it being described as a dance:

https://m.youtube.com/watch?v=vWWnQErrmpg

[Gatsky]

The word ‘chorea’ is derived from the greek word for ‘dance’ as it happens.

[codetrotter]

That explains where the word “choreography” comes from :D

[xeromal]

Wow, you're right.