Bowhunter Syndrome

What is Bowhunter Syndrome?

Bowhunter Syndrome, also known as rotational vertebral artery occlusion, is a rare condition that results in compression of a vertebral artery, reducing blood flow to the brain, when the patient turns their head. This can lead to symptoms related to decreased circulation in the posterior part of the brain. At UTHealth Houston Neurosciences, we provide specialized evaluation and treatment for this uncommon but important condition.

What Causes Bowhunter Syndrome?

The condition is usually caused by structural abnormalities in the cervical spine, such as bone spurs, degenerative changes, or instability, which compress the vertebral artery during head movement. In some cases, prior injury or congenital differences in anatomy may contribute.

Symptoms of Bowhunter Syndrome

Symptoms typically triggered by head rotation may include dizziness, fainting, vertigo, blurred vision, or unsteadiness. Some patients may also experience nausea or difficulty with coordination. Symptoms often improve when the head returns to a neutral position.

How do Physicians Diagnose Bowhunter Syndrome?

Diagnosis often requires dynamic imaging studies, such as CT angiography or MR angiography performed while the head is in various positions. These tests help demonstrate changes in blood flow. At UTHealth Houston, we use advanced imaging techniques to accurately identify the source of compression.

How is Bowhunter Syndrome Treated?

Treatment may include avoiding triggering movements, physical therapy, or wearing a cervical collar. In more severe cases, surgery may be recommended to relieve the compression and restore normal blood flow. Our team develops individualized treatment plans aimed at improving safety and quality of life.