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Allergic rhinitis, of which the seasonal type is called hay fever, is a type of inflammation in the nose that occurs when the immune system overreacts to allergens in the air. [6] It is classified as a type I hypersensitivity reaction . [ 8 ]
Rhinitis is very common. Allergic rhinitis is more common in some countries than others; in the United States, about 10–30% of adults are affected annually. [12] Mixed rhinitis (MR) refers to patients with nonallergic rhinitis and allergic rhinitis. MR is a specific rhinitis subtype. It may represent between 50 and 70% of all AR patients.
For instance, allergic rhinitis, also known as hay fever, causes irritation of the nose, sneezing, itching, and redness of the eyes. [23] Inhaled allergens can also lead to increased production of mucus in the lungs , shortness of breath , coughing, and wheezing.
“This means you can ‘stack’ minor, otherwise inconsequential allergic reactions together with seasonal pollen and allergens that can cause an increase in allergy symptoms,” continues Dr ...
Grass allergy is generally linked to hay fever because their symptoms and causes are somehow similar to each other. Symptoms include rhinitis, which causes sneezing and a runny nose, as well as allergic conjunctivitis, which includes watering and itchy eyes. [17]
Some causes of rhinorrhea include: acute sinusitis (nasal and sinus infection), allergies, chronic sinusitis, common cold, coronaviruses (COVID-19), decongestant nasal spray overuse, deviated septum, dry air, eosinophilic granulomatosis with polyangiitis, granulomatosis with polyangiitis, hormonal changes, influenza (flu), lodged object ...