Question

Allergies can be controlled by taking histamines.

• A. True
• B. False

Answer 1

The correct option is B False

Antigen-antibody reaction:

1. During allergy, the immune system recognizes an allergen such as a pollen grain, (mostly a harmless substance) as a foreign antigen, as a threat to the body.
2. This triggers an antigen-antibody reaction.
3. This reaction occurs on the membrane of special cells called the mast cells which become permeable and burst.
4. Mast cells release chemicals called histamines.
5. Histamine causes dilation of blood capillaries, redness and itchiness of skin and inflammation of membranes.
6. Allergies can be controlled by antihistamines, decongestants and steroid medications.

Final answer: The given statement is false.