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What determines the severity of an allergy attack?

Severity of an allergy is usually determined by how one's immune system reacts to the allergen, such as pollen. The chemical histamine released by certain cells in your body that cause the reactions can be mild, causing a mild symptoms or severe, leading to serious symptoms. Also, prior exposure to an allergen and the amount of pollen in the environment can determine the severity of the allergy.

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Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.