Hives and angioedema

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Definition

By Mayo Clinic staff

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Image showing hives on light skin Hives on light skin
Image showing hives on dark skin Hives on dark skin

Hives — also known as urticaria (ur-tih-KAR-e-uh) — is a skin reaction that causes raised, red, itchy welts (wheals, or swellings) in sizes ranging from small spots to large blotches several inches in diameter. Individual welts appear and fade as the reaction runs its course. Angioedema is a related type of swelling that affects deeper layers in your skin, often around your eyes and lips.

In most cases, hives and angioedema are harmless and don't leave any lasting marks, even without treatment. The most common treatment for hives and angioedema is antihistamine medications. Serious angioedema can be life-threatening if swelling causes your throat or tongue to block your airway and leads to loss of consciousness.

Symptoms
References
  1. Kaplan AP. Urticaria and angioedema. In: Wolff K, et al. Fitzpatrick's Dermatology in General Medicine. 7th ed. New York, N.Y.: The McGraw-Hill Companies; 2008. http://www.accessmedicine.com/content.aspx?aid=2958607. Accessed Sept. 13, 2010.
  2. MacNeal RJ. Urticaria. The Merck Manuals: The Merck Manual for Healthcare Professionals. http://www.merck.com/mmpe/sec10/ch109/ch109e.html?qt=urticaria&alt=sh#sec10-ch109-ch109e-101c. Accessed Sept. 14, 2010.
  3. Bingham CO. New onset urticaria: Diagnosis and Treatment. http://www.uptodate.com/home/index.html. Accessed Sept. 29, 2010.
  4. Atkinson JP. Diagnosis of hereditary angioedema. http://www.uptodate.com/home/index.html. Accessed Sept. 29, 2010.
  5. Bingham CO. New onset urticaria: Epidemiology, clinical manifestations and etiology. http://www.uptodate.com/home/index.html. Accessed Sept. 29, 2010.
  6. Urticaria and angioedema. In: Wolff K, et al. Fitzpatrick's Color Atlas and Synopsis of Clinical Dermatology. 6th ed. New York, N.Y. The McGraw-Hill Companies; 2009. http://www.accessmedicine.com/content.aspx?aID=5187962. Accessed Sept. 14, 2010.
  7. Initial evaluation of all patients with urticaria. In: Habif TP. Clinical Dermatology: A Color Guide to Diagnosis and Therapy. 5th ed. Edinburgh, Scotland. Mosby/Elsevier; 2010. http://www.mdconsult.com/books/page.do?eid=4-u1.0-B978-0-7234-3541-9..00015-8--s0180&isbn=978-0-7234-3541-9&type=bookPage&sectionEid=4-u1.0-B978-0-7234-3541-9..00015-8--s0180&uniqId=220753099-3#4-u1.0-B978-0-7234-3541-9..00015-8--s0180. Accessed Oct. 1, 2010.
  8. Treatment of urticaria. In: Habif TP. Clinical Dermatology: A Color Guide to Diagnosis and Therapy. 5th ed. Edinburgh, Scotland. Mosby/Elsevier; 2010. http://www.mdconsult.com/books/page.do?eid=4-u1.0-B978-0-7234-3541-9..00015-8--s0290&isbn=978-0-7234-3541-9&type=bookPage&sectionEid=4-u1.0-B978-0-7234-3541-9..00015-8--s0290&uniqId=220753099-3#4-u1.0-B978-0-7234-3541-9..00015-8--s0290. Accessed Sept. 13, 2010.
  9. Acute urticaria: Evaluation and management. In: Habif TP. Clinical Dermatology: A Color Guide to Diagnosis and Therapy. 5th ed. Edinburgh, Scotland. Mosby/Elsevier; 2010. http://www.mdconsult.com/books/page.do?eid=4-u1.0-B978-0-7234-3541-9..00015-8--s0185&isbn=978-0-7234-3541-9&type=bookPage&sectionEid=4-u1.0-B978-0-7234-3541-9..00015-8--s0185&uniqId=220753099-3#4-u1.0-B978-0-7234-3541-9..00015-8--s0185. Accessed Oct. 1, 2010.
  10. Bingham CO. An overview of angioedema: Clinical features, diagnosis and management. http://www.uptodate.com/index/home.html. Accessed Oct. 1, 2010.
  11. Delves PJ. Angioedema. The Merck Manuals: The Merck Manual for Healthcare Professionals. http://www.merck.com/mmpe/sec13/ch165/ch165b.html. Accessed Oct. 1, 2010.
  12. FDA licenses for marketing new drug for rare genetic disease. Food and Drug Administration. http://www.fda.gov/NewsEvents/Newsroom/PressAnnouncements/ucm161477.htm. Accessed Oct. 1, 2010.
  13. Cinryze. Food and Drug Administration. http://www.fda.gov/BiologicsBloodVaccines/BloodBloodProducts/ApprovedProducts/LicensedProductsBLAs/FractionatedPlasmaProducts/ucm150480.htm. Accessed Oct. 6, 2010.
  14. Nolte H, et al. Overview of skin testing for allergic disease. http://www.uptodate.com/index/home.html. Accessed Oct. 2, 2010.
  15. Berinert. Food and Drug Administration. http://www.fda.gov/BiologicsBloodVaccines/BloodBloodProducts/ApprovedProducts/LicensedProductsBLAs/FractionatedPlasmaProducts/ucm186264.htm. Accessed Oct. 15, 2010.
  16. Kalbitor. Drugs @FDA. http://www.accessdata.fda.gov/scripts/cder/drugsatfda/index.cfm. Accessed Oct. 15, 2010.
  17. Gibson LE (expert opinion). Mayo Clinic, Rochester, Minn. Oct. 13, 2010.
DS00313 Dec. 21, 2010

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