Question

what method are used to define the causative allergy​

Answer 1

Answer:

It is characterized by one or more symptoms including sneezing, itching, nasal congestion, and rhinorrhea. Many causative agents have been linked to AR including pollens, molds, dust mites, and animal dander. ... SAR can result in hyperresponsiveness to allergens such as cigarette smoke, once pollen season is over.

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Answer 2

Explanation:

Allergies occur when your immune system reacts to a foreign substance — such as pollen, bee venom or pet dander — or a food that doesn't cause a reaction in most people. ... When you have allergies, your immune system makes antibodies that identify a particular allergen as harmful, even though it isn't.

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