What causes seasonal allergic rhinitis?

Seasonal allergic rhinitis is caused by your body's reaction to seasonal allergens - usually things like pollen from trees, grass, or weeds. In people with seasonal allergic rhinitis, the immune system overreacts to these harmless substances and identifies them as a threat. Your body fights back by releasing chemicals like histamine, which causes the sneezing and runny nose that are typical symptoms of seasonal allergic rhinitis.

allergic reaction, allergen, allergy, food allergy, drug allergy, allergies, anaphylactic reaction, anaphylactic shock, anaphylaxis, antibodies, antibody, drug rash, hypersensitivity, immunoglobulin E, IgE, immunotherapy, hay fever, bee stings, wasp stings, insect sting, poison ivy, poison sumac, poison oak, shock, symptoms of allergic reaction, allergic reaction symptoms, animal dander, dust, mold, anti-allergy medications, antihistamines, nasal corticosteroid sprays, epinephrine, allergy shot, allergy shots, antigen

Continue Learning about Nose Disorders

Nose Disorders

Nose Disorders

Your nose plays a very important part in maintaining your health. As you breathe it filters out the bad stuff in the air like dust and germs. It also moistens the air as you breathe so that your lungs stay hydrated and healthy. Yo...

u can be miserable if your nose is injured or irritated, whatever the cause. Nose disorders can range from a simple nosebleed or a runny nose that can be treated at home to more serious disorders such as nasal polyps (growths) or a deviated septum (a twist in the wall that separates the two sides of your nose) that may require surgery. Whatever the cause of your nose problem, it's important to know that you can usually be helped by seeing an ear, nose and throat (ENT) doctor.

Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.