Question

what is allergies and why does? it occurse​

Answer 1

Answer:

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. Your immune system produces substances known as antibodies.

Answer 2

$\huge\mathfrak\pink{Algeries }$

• Allergies, also known as allergic diseases, are a number of conditions caused by hypersensitivity of the immune system to typically harmless substances in the environment.

• These diseases include hay fever, food allergies, atopic dermatitis, allergic asthma, and anaphylaxis.

• Symptoms may include red eyes, an itchy rash, sneezing, a runny nose, shortness of breath, or swelling. Food intolerances and food poisoning are separate conditions