As of Oct. 3, 2026, MyChart is now your new online health record at Children’s Minnesota. Learn more and activate your account now.
As of Oct. 3, 2026, MyChart is now your new online health record at Children’s Minnesota. Learn more and activate your account now.
Article Translations: (Spanish)
Say: syne-yuh-SYE-tis
Sinusitis is an infection of the sinuses, which are air-filled spaces in the bones of your face around the nose. Like the inside of your nose, the sinuses are lined with a thin layer of tissue called the mucous membrane that makes mucus (snot).
When you have a cold or allergies, the tiny holes that drain the sinuses can get blocked and trap mucus and germs in the sinuses, which can lead to sinusitis.
Note: All information is for educational purposes only. For specific medical advice, diagnoses, and treatment, consult your doctor.
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