Postnasal drip, which is when excess mucus runs down the back of your throat
Reduced sense of smell
Breathing through your mouth
Feeling of pressure in your forehead or face
Have you ever felt like you have a cold that doesn’t go away? Nasal congestion that doesn’t seem to stop, even with over-the-counter cold or allergy medication, may be due to nasal polyps.
Nasal polyps are benign (noncancerous) growths of the lining tissues, or mucosa, of your nose.
A nasal polyp will likely be visible if your doctor looks up into your nasal passages with a lighted instrument called an endoscope. This procedure involves your doctor guiding a thin, flexible tube with a light and camera at the end into your nasal passages.
A CT scan or MRI scan may be necessary to determine the exact size and location of the polyp. Polyps show up as opaque spots on these scans. Scans can also reveal whether the polyp deformed the bone in the area. This can also rule out other kinds of growths that may be more medically serious, such as structural deformities or cancerous growths.
Allergy tests can help doctors determine the source of persistent nasal inflammation. These tests involve making tiny skin pricks in your skin and depositing the liquid form of a variety of allergens. Your doctor will then see if your immune system reacts to any of the allergens.
If a very young child has nasal polyps, tests for genetic diseases, such as cystic fibrosis, may be necessary.