Allergic rhinitis is an inflammatory condition of the nose and nasal sinuses that occurs when a person is exposed to something they are allergic to. Allergens are substances that cause allergic reactions
Vasomotor rhinitis, or non-allergic rhinitis, is characterized by runny nose or congestion that is not triggered by allergens. Most commonly the triggers include fragrances, smoke, spicy foods, temperature changes and hormonal imbalance.
Nasal polyps are sac-like fleshy growths that grow in the lining of the nose or sinuses resulting in inflammation of the mucous membranes. They occur from the presence of other respiratory diseases that last for a long time such as allergic rhinitis, chronic sinusitis, asthma, and aspirin allergy. Nasal polyps are more common in people with non-allergic rhinitis and non-allergic asthma. They tend to grow back even after surgical or medical treatment.