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   Hay fe·ver

   /ˈheɪ ˌfivər/

   

   noun

   • 1. an allergy caused by pollen or dust in which the mucous membranes of the eyes and nose are itchy and inflamed, causing a runny nose and watery eyes.

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2. People also ask

   What is hay fever?

   • Hay fever is an allergic reaction to certain things. Common triggers include pollen, ragweed, and cats. Also known as allergic rhinitis, there are two types: seasonal, which happens only during the time of year in which certain plants pollinate, and perennial, which happens year-round.

   Hay Fever (Allergic Rhinitis): Causes of Seasonal Allergies - WebMD

   www.webmd.com/allergies/understanding-hay-fever-basics

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   What are hay fever symptoms?

   • Hay fever symptoms mostly affect your nose, but also the eyes, skin, and roof of the mouth. Allergies, including hay fever, result when your immune system attacks a typically harmless substance that you come across in the environment. In the case of seasonal hay fever, these include grass, tree, and weed pollens as well as outdoor molds.

   What Is Hay Fever? - WebMD

   www.webmd.com/allergies/hay-fever-allergy

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   How common is hay fever?

   • Hay fever is very common. In the United States, around 20% of the population has allergic rhinitis. In 2021, one study found that more than 81 million people had seasonal allergies. Cleveland Clinic is a non-profit academic medical center. Advertising on our site helps support our mission.

   Allergic Rhinitis (Hay Fever): Symptoms & Treatment - Cleveland Clinic

   my.clevelandclinic.org/health/diseases/8622-allergic-rhinitis-hay-fever

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3. www.mayoclinic.org › diseases-conditions › hay-feverHay fever - Symptoms and causes - Mayo Clinic

   www.mayoclinic.org › diseases-conditions › hay-fever

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   Jul 7, 2022 · Hay fever can worsen symptoms of asthma, such as coughing and wheezing. Sinusitis. Prolonged sinus congestion due to hay fever may increase your risk of getting sinusitis — an infection or inflammation of the membrane that lines the sinuses. Ear infection. In children, hay fever often is a factor in middle ear infection (otitis media). Prevention

4. my.clevelandclinic.org › health › diseasesAllergic Rhinitis (Hay Fever) - Cleveland Clinic

   my.clevelandclinic.org › health › diseases

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   Sep 21, 2023 · Hay fever is an allergic reaction to tiny particles in the air called allergens. It causes sneezing, congestion, itchy nose and watery eyes. Pollen, pet dander, mold and insects are common triggers of hay fever. You can find relief with lifestyle changes, allergy medications and immunotherapy.

5. www.healthline.com › health › hay-fever-symptomsHay Fever Symptoms: Triggers, Complications, and Treatment

   www.healthline.com › health › hay-fever-symptoms

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   Hay fever is a common condition that causes inflammation of the nose and eyes from exposure to allergens. It can be seasonal, perennial, or occupational. Learn how to manage or treat hay fever symptoms, such as runny nose, sneezing, itchy eyes, and sinusitis. Find out the difference between hay fever and cold, and the causes and triggers of hay fever.

6. www.webmd.com › allergies › hay-fever-allergyWhat Is Hay Fever? - WebMD

   www.webmd.com › allergies › hay-fever-allergy

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   Feb 14, 2023 · Hay fever is the common term for seasonal allergies, also known as allergic rhinitis. It causes sneezing, itching, runny nose, and other symptoms when your immune system attacks harmless substances in the environment. Learn about the causes, symptoms, diagnosis, treatment, and prevention of hay fever.

7. www.webmd.com › allergies › understanding-hay-feverHay Fever (Allergic Rhinitis): Causes of Seasonal Allergies

   www.webmd.com › allergies › understanding-hay-fever

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   Jun 6, 2023 · Hay fever is an allergic reaction to certain things. Common triggers include pollen, ragweed, and cats. Also known as allergic rhinitis, there are two types: seasonal, which happens only during ...

8. acaai.org › allergies › allergic-conditionsHay Fever (Rhinitis) | Symptoms & Treatment | ACAAI Public ...

   acaai.org › allergies › allergic-conditions

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   Hay fever is another name for allergic rhinitis, most commonly used to describe a seasonal allergic reaction to pollen such as ragweed. However, the term is often used to refer to nasal allergies caused by any inhaled allergen. Despite the name, hay fever is not necessarily a reaction to hay, and it does not cause a fever.