Which of the following drugs can be used to quickly reduce the symptoms of an allergic reaction?
I. Anti-histamine
II. Adrenaline
III. Steroids
Answer & explanation
Correct answer: option 4
The correct answer is Option (4) → I, II and III
Allergy is due to the release of chemicals like histamine and serotonin from the mast cells. Its symptoms, such as sneezing, watery eyes, running nose and difficulty in breathing, can be brought down quickly with drugs. The book names three such drugs.
I. Anti-histamine — True. Anti-histamines act against histamine, one of the chemicals released by mast cells in allergy.
II. Adrenaline — True. Adrenalin is one of the drugs the book lists for quickly reducing allergy symptoms.
III. Steroids — True. Steroids are the third drug named for quick relief from allergy.
NCERT Extract:
Allergies – “… Symptoms of allergic reactions include sneezing, watery eyes, running nose and difficulty in breathing. Allergy is due to the release of chemicals like histamine and serotonin from the mast cells. For determining the cause of allergy, the patient is exposed to or injected with very small doses of possible allergens, and the reactions studied. The use of drugs like anti-histamine, adrenalin and steroids quickly reduce the symptoms of allergy.”