Hives (Urticaria)

Editor: V. Dimov, M.D., Allergist/Immunologist, Cleveland Clinic Florida, Clinical Associate Professor, FAU Charles E. Schmidt College of Medicine

Hives are raised, itchy, red bumps (welts) on the surface of the skin. They can be caused by an allergic reaction to food, drugs, or other causes. Urticaria affects up to 20% of people at some point in their lives.

Hives (urticaria) and angioedema
Allergic Skin Conditions
Allergy Testing
Anti-FceR1 Autoantibodies in Chronic Urticaria
Contact dermatitis
Eczema or atopic dermatitis



Urticaria (hives): what is the cause? (click to enlarge the image).



Chronic Urticaria Treatment Options in 6 Steps (click to enlarge the image). En EspaƱol.



Laboratory Diagnosis of Chronic Urticaria (click to enlarge the image).



Anti-FceR1 autoantibodies in chronic autoimmune urticaria: IgG against FceRI (receptor for IgE) (click to enlarge the image).

What to expect when visiting an allergy clinic

Current allergy skin tests are virtually painless. This video by Dr. Bassett, a board-certified allergist from New York City, shows what to expect when visiting an allergy clinic for diagnosis and treatment:





Related reading

CIU & You - Patient support website about Chronic Idiopathic Urticaria, sponsored by the makers of Xolair http://buff.ly/1zypqKg 
Urticaria and angioedema. Allergy, Asthma & Clinical Immunology 2011, 7(Suppl 1):S9.
Blog articles from AllergyNotes
Questions to ask if a patient has a suspected episode of anaphylaxis

Image source: Urticaria, Wikipedia, public domain.

Published: 09/15/2007
Updated: 02/12/2017

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