Looking after oldies good? It is with carer being special (10)
I believe the answer is:
geriatrics
'looking after oldies' is the definition.
(medical care of elderly people)
'good? it is with carer being special' is the wordplay.
'good?' becomes 'g' (abbreviation).
'with' says to put letters next to each other.
'being special' indicates anagramming the letters.
'it'+'is'='itis'
'itis' put after 'carer' is 'careritis'.
'careritis' is an anagram of 'eriatrics'.
'g'+'eriatrics'='GERIATRICS'
(Other definitions for geriatrics that I've seen before include "Branch of medicine dealing with old people" , "Old people's" , "In treatment of old" .)