Given care, treated for complaint (9)
I believe the answer is:
grievance
'complaint' is the definition.
(grievance is a kind of complaint)
'given care treated' is the wordplay.
'treated' is an anagram indicator.
'given'+'care'='givencare'
'givencare' is an anagram of 'GRIEVANCE'.
'for' acts as a link.
(Other definitions for grievance that I've seen before include "beef" , "Item causing resentment" , "Bad feeling" , "gripe" , "Complaint" .)