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Urticaria is a skin condition that affects 1 in 5 people at certain period of their life. It causes intensely itchy, raised patches on the skin known as weals (or hives) that can be round or ring shaped and may join together.
It is caused when histamine and other chemical mediators are released into the bloodstream by certain body cells known as mast cells. The welts are the result of fluid leaking from the skin’s capillaries.

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