Question

Write short notes on the following:
Allergy

Hint:

Understanding allergies can help manage reactions, and knowledge of DNA composition is essential for studying genetics and molecular biology.

Answer 1

Allergy.
Allergy is an immune system reaction to foreign substances known as allergens. These substances may include pollen, dust mites, mold, certain foods, and insect venom. When a person with an allergy encounters an allergen, the immune system overreacts, producing symptoms such as:
1. Sneezing
2. Itchy eyes
3. Runny nose
4. Swelling
5. Anaphylaxis in severe cases.
The immune system produces IgE antibodies against allergens, which trigger the release of histamine and other chemicals that cause inflammation. Treatment options include antihistamines and immunotherapy.
Conclusion.
Allergy involves an overreaction of the immune system to harmless substances