After routine work, a nervous condition (6)
I believe the answer is:
chorea
'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" .)