hay fever
21Jan, 2018

WHAT IS HAY FEVER?

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Hay fever is an allergy that produces symptoms similar to a cold, but a cold virus does not cause it. It is caused by an immune system response to allergens, like dust mites, pet dander or pollen. When you have hay fever, your immune system identifies a harmless airborne substance as a threat. Your immune system will then produce antibodies to this substance. Then when you come in contact with the substance again, the antibodies will signal your immune system to release chemicals such as histamine, which causes a reaction […]
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