Non-allergic rhinitis is inflammation of the inside of the nose that is not caused by an allergy.
Rhinitis that is caused by something that triggers an allergy, such as pollen, is a separate health condition known as allergic rhinitis.
Symptoms of non-allergic rhinitis can include:
In rare cases, non-allergic rhinitis can also cause a crust to develop inside the nose, which may:
See your GP if you have symptoms of non-allergic rhinitis and they're affecting your quality of life.
Non-allergic rhinitis can be difficult to diagnose, as there is no test to confirm it. Your GP will first ask about your symptoms and medical history.
They may then carry out a blood test to check if you have an allergy, or they may refer you to a hospital clinic for more specific tests for allergies, including a "skin prick test".
If the test results suggest you do not have an allergy, you may be diagnosed with non-allergic rhinitis.
Read more about diagnosing non-allergic rhinitis.
In non-allergic rhinitis, the inflammation is usually the result of swollen blood vessels and a build-up of fluid in the tissues of the nose.
This swelling blocks the nasal passages and stimulates the mucus glands in the nose, resulting in the typical symptoms of a blocked or runny nose.
There are several possible causes of non-allergic rhinitis including:
Read more about the causes of non-allergic rhinitis.
Non-allergic rhinitis is not usually harmful but it can be irritating and affect your quality of life. The best treatment depends on how severe the rhinitis is and what's causing it.
In some cases, avoiding certain triggers and undertaking self care measures, like rinsing your nasal passages, may relieve your symptoms.
Rinsing your nasal passages, can be done using either a homemade solution or a solution made with sachets of ingredients bought from a pharmacy.
In other cases, you may need to take a medicine, such as a nasal spray containing steroids. Steroid nasal sprays help to relieve the congestion, but you need to use them over a number of weeks for them to work properly.
Read more about treating non-allergic rhinitis.
In some cases, non-allergic rhinitis can lead to complications. These include:
These problems can often be treated with medication, although surgery is sometimes needed in severe or long-term cases.
Read more about the complications of non-allergic rhinitis.