The Sinus & Allergy Center
How Allergens Affect You
Allergens are harmless substances that normally don’t cause symptoms in most people. But when you have allergies, your body mistakes allergens for something harmful. The body responds by attacking the allergens, causing symptoms. With nasal allergies, symptoms develop when allergens are breathed in through the nose. Other parts of the body such as the eyes, ears, throat, and lungs can also be affected.
Normal Nasal Passages
The nasal passages are airways in the nose. The sinuses are hollow, air-filled chambers in the bones that surround the nasal passages. The nasal passages and sinuses are lined with moist tissue that produces mucus. This is a clear liquid that coats and protects nasal tissue.
Nasal Passages with Allergies
Allergies can cause nasal tissue to swell, making air passages smaller. The nose may feel stuffed up. Extra mucus is produced, which can plug the nasal passages or drip out of the nose. Mucus can also drip down the back of the
throat (postnasal drip). Sinus tissue can swell. This may cause discomfort and headache.
When You Have an Allergic Reaction
Allergens trigger fighting substances in the body Called antibodies (immunoglobulin).
These antibodies are attached to special cells Called mast cells. Allergens stick to the antibodies. This makes the mast cells
release histamine and other chemicals. These Chemicals irritate surrounding nasal tissue, Causing allergy symptoms.
Releated Problems
Nasal allergies can cause problems throughout the body. These include:
419-474-9324 X(105)
