Nasal inflammation (8)
I believe the answer is:
rhinitis
'nasal inflammation' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for rhinitis that I've seen before include "I hint, sir, about a nose inflammation" , "Inflammation of the lining of the nose" , "Nasal inflammation" , "Medical complaint" , "trouble with the beak" .)