What Is Chronic Idiopathic Urticaria (Hives)? Symptoms, Causes

Chronic idiopathic urticaria (hives) is a condition in which itchy welts appear on the skin for 6 weeks or longer, with no identifiable cause.

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Urticaria Nature Reviews Disease Primers

WHAT IS URTICARIA (HIVES)

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Chronic Urticaria & Chronic Idiopathic Urticaria - Causes & Treatment

Hives (Urticaria) Treatment

What Is Chronic Idiopathic Urticaria (Hives)? Symptoms, Causes

Novartis prepares for FDA submission for its chronic hives

Chronic Idiopathic Urticaria: Pictures, Symptoms, and Treatment