Friday, November 20, 2009

What is mechanism of skin to cause itching,after scraching ,y?it subsides?after taking medicine how it relieve

Histamine is a substance that is produced in the body in allergy to various factors.This causes blebs and rash that itch.Scrathing crushes the bleb or rash and Histamine gets into blood to be metabolised.Drugs called Antihistaminics prevent Histamine from causing any itching.


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