Hallucinatory state (8)
I believe the answer is:
delirium
'hallucinatory state' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for delirium that I've seen before include "Wild enthusiasm" , "Disturbed state of mind - excitement" , "Extreme mental disturbance" , "Feverish excitement" , "Wild state of mind" .)