Biology, asked by SimranKushwaha256, 7 months ago

what is allergic reactions...​

Answers

Answered by ravinedrop07
1

Explanation:

Signs include trouble breathing, pale or blue skin, hives, itching, vomiting, or anxiety. Symptoms can start within just a few minutes after you come in contact with the cause.

Answered by Anonymous
7

Answer:

Allergic reactions are sensitivities to substances called allergens that come into contact with the skin, nose, eyes, respiratory tract, and gastrointestinal tract. They can be breathed into the lungs, swallowed, or injected.

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