Reviewed it - a goal - that's a pain (7)
I believe the answer is:
otalgia
'that's a pain' is the definition.
(otalgia is a kind of pain)
'reviewed it a goal' is the wordplay.
'reviewed' indicates an anagram (letters reviewed or revised).
'it'+'a'+'goal'='itagoal'
'itagoal' anagrammed gives 'OTALGIA'.
(Other definitions for otalgia that I've seen before include "Problem with ears" , "Earache" , "pain!" , "painful condition" , "Ear ache" .)