Table 2.

Clinical and outcome information for dogs diagnosed with idiopathic vestibular syndrome

	Total number of dogs (n = 128)
Age	Median 84.5 months (range 15–175)
Sex	Male n = 78/128 (61%) Female n = 50/128 (39%)
Onset of clinical signs	Acute n = 118/128 (92%) Chronic n = 10/128 (8%)
Progression of clinical signs	Progressive n = 21/122 (17%) Non-progressive n = 94/122 (77%) Waxing/waning n = 7/122 (6%)
Neurological abnormalities on examination	Head tilt n = 126/128 (98%) Nystagmus n = 68/128 (53%) Ataxia n = 79/128 (61%) Facial paralysis n = 64/128 (50%) Positional strabismus n = 61/128 (48%) Horner syndrome n = 4/128 (3%)
MRI findings	No abnormalities n = 83/128 (65%) CN VII enhancement n = 30/128 (23%) CN VIII enhancement n = 5/128 (4%) CN VII and VIII enhancement n = 10/128 (8%)
CSF abnormalities	Mild pleocytosis n = 2/81 (2%) Albuminocytological dissociation = 4/81 (5%)
Outcome information	Complete recovery n = 47/94 (50%) Persistence of clinical signs n = 47/94 (50%) Facial paralysis n = 28/94 (30%) Head tilt n = 25/94 (27%) Ataxia n = 4/94 (4%)
Recurrence of clinical signs	Recurrence n = 19/85 (22%) No recurrence n = 66/85 (78%)