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What is the definition of sinuses?

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Sinuses are air-filled cavities (spaces) located in your forehead, cheekbones, and behind the bridge of your nose; the sinuses produce a thin mucus that drains out the channels of the nose.

From: Migraine and Headache Glossary WebMD Medical Reference

SOURCES: Mayo Clinic. National Institute of Neurological Disorders and Stroke.

Reviewed by Nayana Ambardekar on February 13, 2019

SOURCES: Mayo Clinic. National Institute of Neurological Disorders and Stroke.

Reviewed by Nayana Ambardekar on February 13, 2019

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