2. Allergy is Usually the Underlying Cause of Nasal Polyps

Allergies can cause nasal polyps. They might be due to dust, pollen, or even certain types of food. Shellfish, dairy, nuts, and wheat are among the most common food allergies. Your doctor can administer a skin scratch test to check if you have any allergens affecting you. A skin scratch test, however, will not help your doctor diagnose food-based allergies. If you frequently get nasal polyps and suspect a food-based allergy, eliminate eating that food for ten days. If your breathing clears up, continue to avoid that food.

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