Lewis triple response is caused due to:
Correct Answer: Histamine
Description: Lewis triple response is caused due to Histamine When histamine is injected intradermally it causes the triple response consisting of: Red spot: Due to capillary dilatation. Wheal: Due to exudation of fluid from capillaries and venules. Flare: Redness in the surrounding area due to aeriolar dilation mediated by axon reflex. A, 'Triple response' elicited by firm stroking of skin of forearm with a pencil. B, Diagrammatic view of microscopic features of triple response of the skin
Category:
Pathology
Get More
Subject Mock Tests
Practice with over 200,000 questions from various medical subjects and improve your knowledge.
Attempt a mock test nowMock Exam
Take an exam with 100 random questions selected from all subjects to test your knowledge.
Coming SoonGet More
Subject Mock Tests
Try practicing mock tests with over 200,000 questions from various medical subjects.
Attempt a mock test now