Crossword Genius

After routine work, a nervous condition (6)

Ross

I believe the answer is:

chorea

I'm a little stuck... Click here to teach me more about this clue!

'nervous condition' is the definition.
(I've seen this before)

'after routine work a' is the wordplay.
'after' means one lot of letters go next to another.
'routine work' becomes 'chore' (chore is a kind of work. I am not sure about the 'routine' bit.).
'chore' put next to 'a' is 'CHOREA'.

Can you help me to learn more?

(Other definitions for chorea that I've seen before include "Huntington's --, nervous condition" , "nervous disorder" , "Neurological disorder" , "Nervous condition, often with facial twitching" .)

I've seen this clue in The Sunday Times.
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