Since the symptoms are so specific we know exactly the
area that is damaged but thus far no-one has established
how that damage or injury occurs.
The inner ear contains a number of very sensitive structures
(utricle,saccule and semicircular canals) which, through
a variety of coordinated nerve impulses, allow us to maintain
our balance and head position. Clearly something must affect
these structures adversely to produce "Bonnie's"
The most common adverse factor to affect the vestibular
apparatus in humans is alcohol..........so I am told!
A more comparable condition in humans is vestibular neuritis
where the symptoms are identical but where the causative
factor is believed to be a virus.
The good news for "Bonnie" and her owners is
that nearly all canine patients will go on to make a good
recovery although some may be left with a slight head tilt
(providing she stays off the booze!)
Dunne BVMS, Cert SAO, MRCVS
to "Interesting Cases"
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