Aural discomfort (7)
I believe the answer is:
earache
'aural discomfort' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for earache that I've seen before include "Ace hare (anag.)" , "stabbing in vestibule?" , "Otalgia" , "Form of torture" , "Pain in an aural appendage" .)