My dog’s head is tilted and it keeps circling one way — is this a stroke?
A head tilt with circling and flicking eyes points to the vestibular system — causes range from an inner-ear infection to brain disease, and only an exam can tell them apart.
The vestibular system runs from the inner ear to the brainstem, and when it misfires the world spins: the dog tilts its head, leans and falls to one side, walks in circles, and its eyes may flick rhythmically. Nausea, drooling, and refusing food often ride along.
Old-dog vestibular disease or something worse
In older dogs a sudden vestibular storm with no other deficits is often idiopathic vestibular disease, which tends to improve over days. But the identical picture can come from a middle-ear infection, toxin exposure — including some ear medications — a brain tumor, or a vascular event, and a few bedside details separate them: weakness on one side of the face or body, a changed level of consciousness, or an eye flick that changes direction all point away from the benign version.
Recovery speed and the underlying cause differ widely between individual dogs, and a wait-and-see call made at home cannot rule out the dangerous causes. Take a video of the eye movements, note when it started, and have a veterinarian examine the dog promptly — the same day it begins, and immediately if it cannot stand, keeps vomiting, or seems mentally dull.
MediIndex articles are for general information only and are not medical advice, diagnosis, or advertising. Outcomes vary by individual — consult a board-certified specialist for personal decisions.