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Medical Author:

Melissa Conrad Stöppler, MD, Chief Medical Editor

Melissa Conrad Stöppler, MD, Chief Medical Editor

Melissa Conrad Stöppler, MD, is a U.S. board-certified Anatomic Pathologist with subspecialty training in the fields of Experimental and Molecular Pathology. Dr. Stöppler's educational background includes a BA with Highest Distinction from the University of Virginia and an MD from the University of North Carolina. She completed residency training in Anatomic Pathology at Georgetown University followed by subspecialty fellowship training in molecular diagnostics and experimental pathology.

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Medical Editor:

Mary Nettleman, MD, MS, MACP

Mary Nettleman, MD, MS, MACP

Mary D. Nettleman, MD, MS, MACP is the Chair of the Department of Medicine at Michigan State University. She is a graduate of Vanderbilt Medical School, and completed her residency in Internal Medicine and a fellowship in Infectious Diseases at Indiana University.

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Inflammation of the tissues lining the sinuses is the primary cause of sinus headache. The inflamed tissues swell and produce secretions that clog the normal drainage system of the sinuses, causing a build-up of fluid and secretions. The pressure of this fluid build-up causes the pain of sinus headache. Inflammation of the sinuses is known as sinusitis. The inflammation may arise due to an infection, an allergic reaction such as hay fever, or to irritation.

Most commonly, infectious sinusitis (sinus infection) is due to a viral infection, but bacterial and fungal infections of the sinuses can also occur. Since the maxillary sinuses are located in the cheekbone, infections of the upper teeth can spread into these sinuses. In very rare cases, benign or malignant tumors can invade and block drainage in the sinuses and lead to a sinus headache.

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