You have severe itching problems when bitten by an insect.Your friend gives you an ointment to spread on your skin around the bite so that the redness and itching do not bother you.The likely mechanism of this medication would be

Question

Quizplus · Accepted Answer

The medication is likely acting as an antagonist of histamine, as histamine is the primary mediator of the symptoms of itching, redness, and swelling that occur in response to insect bites. By blocking the action of histamine, the ointment can relieve these symptoms. The other choices (inactivation of neutrophils, destruction of phagocytic cells, and inhibition of lysozyme) are unlikely mechanisms for an anti-itch ointment.

You Have Severe Itching Problems When Bitten by an Insect