Allergies - Symptoms and causes - Mayo Clinic
https://www.mayoclinic.org/diseases-conditions/allergies/symptoms-causes/syc-20351497
WebAug 5, 2022 · Allergic reactions can range from mild to severe. In some severe cases, allergies can trigger a life-threatening reaction known as anaphylaxis. Hay fever, also called allergic rhinitis, can cause: Sneezing Itching of the nose, eyes or roof of the mouth Runny, stuffy nose Watery, red or swollen eyes (conjunctivitis) A food allergy can cause:
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