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What is chronic idiopathic urticaria (CIU)?

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If you have hives that keep coming and going for weeks on end, and you don’t know what’s causing them, see a doctor. You could have chronic idiopathic urticaria (CIU).

CIU is when a person has these breakouts almost daily for at least 6 weeks, with no known cause.

From: How Are Chronic Hives Diagnosed? WebMD Medical Reference

SOURCES:

Asthma and Allergy Foundation of America: “Chronic Urticaria (Hives).”

American College of Allergy, Asthma & Immunology:  “Hives (Urticaria),” “Skin Test.”

American Academy of Dermatology: “Hives: Diagnosis, Treatment, and Outcome.”

National Heart, Lung, and Blood Institute: “What is Vasculitis?”

Cleveland Clinic: “Problem Foods: Is it an Allergy or Intolerance?”

Reviewed by Hansa D. Bhargava on January 23, 2019

SOURCES:

Asthma and Allergy Foundation of America: “Chronic Urticaria (Hives).”

American College of Allergy, Asthma & Immunology:  “Hives (Urticaria),” “Skin Test.”

American Academy of Dermatology: “Hives: Diagnosis, Treatment, and Outcome.”

National Heart, Lung, and Blood Institute: “What is Vasculitis?”

Cleveland Clinic: “Problem Foods: Is it an Allergy or Intolerance?”

Reviewed by Hansa D. Bhargava on January 23, 2019

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How are chronic hives diagnosed?

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