What is allergy?What are the most common symptoms of allergy?
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Solution
Allergies:
Allergies develop when our immune system reacts to a foreign substance or food that normally causes no reaction in most people, such as pollen, bee venom, or pet dander.
Antibodies are chemicals produced by our immune system.
When you have allergies, our immune system produces antibodies that mistakenly label a harmless allergen as hazardous.
Our immune system's reaction to the allergen can inflame our skin, sinuses, airways, or digestive tract when we come in touch with it.
Sneezing and an itchy, runny, or blocked nose (allergic rhinitis) itchy, red, watering eyes (conjunctivitis) wheezing, chest tightness, shortness of breath, cough.
A raised, itchy, red rash (hives) swollen lips, tongue, eyes or face are the most common symptoms of allergy.