Few things frighten owners more. A dog who was fine an hour ago cannot stand, their head is tilted hard to one side, their eyes are flicking rapidly, and they are vomiting.
It looks like a catastrophe. Most of the time it is idiopathic vestibular disease, and most dogs improve substantially within days to weeks.
What the vestibular system does
It is the balance system: structures in the inner ear and parts of the brainstem and cerebellum that tell the body which way is up and coordinate head, eye and limb position.
When it malfunctions, the dog’s internal sense of the world tilts and spins.
The signs
- Head tilt, usually to one side and often pronounced
- Loss of balance — falling, staggering, leaning, circling, or being unable to stand at all
- Nystagmus — rapid involuntary flicking of the eyes, horizontally or rotationally
- Nausea and vomiting, because the dog is genuinely, severely motion sick
- Reluctance to move
- Rolling, in severe cases
- Disorientation and distress
What is usually preserved: mental alertness and the ability to recognise people. A dog who is bright and responsive but cannot stand is a reassuring picture compared with one who is dull and unaware.
It is not a stroke
Owners almost always say “I think he’s had a stroke”. Strokes do occur in dogs but are far less common than in people, and vestibular disease is much more likely.
It is still a same-day veterinary visit, because several of the causes need treating.
The causes
Idiopathic (“old dog”) vestibular disease. The most common by a wide margin. Sudden onset, no identifiable cause, usually in older dogs. It improves on its own.
Otitis interna — a middle or inner ear infection extending inward. Common, treatable, and worth looking for. Often there is a history of ear disease.
Hypothyroidism, which can cause vestibular signs.
Toxicity, including certain antibiotics that are toxic to the inner ear — which is one reason not to use leftover ear drops without knowing whether the eardrum is intact.
Tumours, of the ear canal or the brain.
Trauma.
Vascular events — genuine strokes.
Inflammatory brain disease.
Peripheral versus central
The distinction your vet will be making, because it changes the outlook considerably.
Peripheral (inner ear) — head tilt, horizontal or rotary nystagmus, and a dog who is otherwise mentally normal. This includes idiopathic disease and ear infections. Generally a good prognosis.
Central (brainstem or cerebellum) — vertical nystagmus, nystagmus that changes direction with head position, mental dullness, weakness in the limbs, other cranial nerve deficits. More concerning, and usually needs advanced imaging.
Your vet examines specifically for these features, which is why a thorough neurological examination matters.
Investigation
- Full physical and neurological examination
- Otoscopic examination of both ears
- Blood tests, including thyroid
- Blood pressure
- Advanced imaging — MRI or CT — if central disease is suspected, or if there is no improvement
For a classic idiopathic presentation in an older dog with a normal examination, many vets will treat supportively first and investigate further only if there is no improvement.
Treatment
For idiopathic disease, supportive care while it resolves:
- Anti-nausea medication. The most important part. These dogs are profoundly nauseous, and stopping the vomiting lets them eat and drink
- Sedation, in severe cases, to reduce distress
- Fluids, if they cannot keep water down
- Nursing care, which is mostly on you
For other causes, treatment addresses the cause — antibiotics for infection, thyroid supplementation, and so on.
Nursing at home
This is where owners make the difference.
- Confine them somewhere safe — a small room, no stairs, no hard edges. Pad the area
- Non-slip flooring. Runners or rubber mats
- Help them outside to toilet, supporting with a towel under the belly as a sling or a harness with a handle
- Hand-feed if necessary, and offer water frequently. Raising the bowl slightly helps some dogs
- Keep the lights low and the environment calm — visual stimulation worsens the disorientation
- Do not carry them about unnecessarily. Moving through space makes it worse
- Turn them if they cannot reposition themselves
- Keep them clean and dry
Some links on this page are affiliate links. If you buy through them we may earn a small commission at no extra cost to you — it helps keep this site free. We only recommend products we would use with our own dogs.
Bedsure Orthopedic Dog Bed
A firm supportive bed with a low entry, somewhere enclosed and safe. A dog who cannot balance needs a surface that does not shift under them, and low sides they cannot fall over.
Earth Rated Dog Wipes
For keeping a dog clean who cannot get up to toilet properly or who has been sick. Nursing hygiene matters — urine scald develops quickly.
The recovery
The encouraging part.
- Nystagmus usually settles within a few days
- Balance improves substantially over one to three weeks
- Most dogs are walking within a few days, wobbly but mobile
- A residual head tilt is common and often permanent. Dogs compensate entirely and it does not affect quality of life
What actually happens is that the brain compensates for the faulty signal rather than the inner ear being repaired. Which is why gentle, supervised movement helps recovery — the brain recalibrates through use.
Relapses occur in some dogs, sometimes on the other side.
When to be more concerned
- No improvement within 72 hours
- Deterioration
- Mental dullness or reduced responsiveness
- Weakness in the limbs
- Vertical nystagmus
- Other cranial nerve signs — facial droop, difficulty swallowing
- A young dog, where idiopathic disease is less likely
Any of these warrants advanced investigation.
The thing to hold onto
Watching a dog roll and stagger and vomit is genuinely distressing, and a lot of owners ask about euthanasia in the first 24 hours.
Do not make that decision in the first few days. The classic idiopathic case looks dreadful at the outset and substantially better within a week. Get the anti-nausea medication, nurse them through it, and reassess after a few days with your vet.
Most of these dogs go back to being entirely normal old dogs with a slightly crooked head.
