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Horner Syndrome

Medically reviewed by Drugs.com. Last updated on Dec 2, 2024.

What is Horner syndrome?

Horner syndrome is a nerve condition that affects one side of your face. The condition is caused by an injury to a nerve that controls that side of the face. Horner syndrome may be a sign of a serious condition such as a stroke or aneurysm. It is important to seek immediate care if you develop other problems, such as head or neck pain.

What are the signs and symptoms of Horner syndrome?

How is Horner syndrome diagnosed?

Your healthcare provider will examine your eyes and face. Your signs and symptoms may be enough for a diagnosis. Tell your healthcare provider about your symptoms, including when they began and if they have worsened over time. Tell the provider about your health conditions, such as cancer or a history of cluster headaches. The provider will also ask if you had any recent injuries. You may also need any of the following:

How is Horner syndrome managed?

Treatment of Horner syndrome depends on the cause. Signs and symptoms usually go away after the cause is treated. You may need any of the following:

When should I seek immediate care?

When should I contact my healthcare provider?

Care Agreement

You have the right to help plan your care. Learn about your health condition and how it may be treated. Discuss treatment options with your healthcare providers to decide what care you want to receive. You always have the right to refuse treatment. The above information is an educational aid only. It is not intended as medical advice for individual conditions or treatments. Talk to your doctor, nurse or pharmacist before following any medical regimen to see if it is safe and effective for you.

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Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.