Idiopathic vestibular syndrome in geriatric dogs: management
13-year-old crossbreed with acute onset of right head tilt, horizontal nystagmus with fast phase to the left, ataxia with falling to the right and vomiting. Normal mentation and postural reactions, no facial paresis or Horner's syndrome; normal otoscopy. The owners fear a stroke and ask about euthanasia.
What is the most appropriate management?
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A. Supportive care (antiemetic such as maropitant, hydration, help with eating and moving) and reassessment: it usually improves within 72 hours
Correct. The signs indicate peripheral vestibular syndrome without an obvious cause in an older dog. It improves markedly within a few days and recovers in 2–3 weeks, although a mild head tilt may remain. If it does not improve or central signs appear, investigate further.
B. Anti-inflammatory prednisolone to speed recovery
There is no evidence that corticosteroids speed recovery from idiopathic vestibular syndrome, and they add adverse effects in a geriatric dog.
C. It is probably a stroke; start clopidogrel
The signs are peripheral (normal mentation and postural reactions, horizontal nystagmus). An infarct would cause central vestibular signs, and clopidogrel is not indicated.
D. Urgent MRI and CSF tap before starting any treatment
With typical peripheral signs and normal otoscopy it is not needed initially; it is reserved for atypical cases, those with central signs or those that do not improve.
lightbulb Key takeaway
Idiopathic vestibular syndrome is one of the most common causes of acute head tilt in older dogs and has a good prognosis: do not recommend euthanasia in the acute phase. Before labelling it, rule out otitis media/interna, hypothyroidism and central signs (postural deficits, altered mentation, vertical nystagmus).
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Updated: October 31, 2026 · Educational content for veterinary professionals. It does not replace current clinical guidelines or the judgement of the attending veterinarian.