A 10-year-old male is given penicillin for an infection. He has an allergic reaction, during which he develops urticarial lesions. These lesions are mediated by the release of:
A) beta-adrenergic agonists.
B) histamine.
C) calcium.
D) cortisol.

Question

Quizplus · Accepted Answer

Urticarial lesions are a type of allergic reaction, specifically a type I hypersensitivity reaction, which is mediated by the release of histamine from mast cells. Beta-adrenergic agonists, calcium, and cortisol are not directly involved in this process.

A 10-Year-Old Male Is Given Penicillin for an Infection