Table of Contents
- Hives facts
- What are hives (urticaria) and angioedema? What do hives look like?
- What causes hives and angioedema?
- What are the different kinds of hives?
- What are the signs and symptoms of ordinary hives?
- What are the causes of ordinary hives?
- What are the causes of chronic hives?
- Are there other conditions that mimic hives?
- What is the treatment for hives?
- What is the prognosis of hives?
Quick GuideRosacea, Acne, Shingles: Common Adult Skin Diseases
Are there other conditions that mimic hives?
There are other rashes that may look like hives, but the fact that they remain stable and do not resolve within 24 hours is helpful in distinguishing them from hives. Such rashes may need to have a small specimen of skin removed and examined under the microscope (biopsy) to accurately determine the nature of the skin disease.
When to visit the doctor
In rare cases, urticaria and angioedema are accompanied by a striking decrease in blood pressure (shock) and difficulty breathing. This is called anaphylaxis and may rapidly become a medical emergency. In this case, a visit to the emergency room or your doctor is necessary. Ordinary hives may be widespread and disturbing to look at, but the vast majority of cases of hives do not lead to life-threatening complications. Continue Reading
Bernstein, Jonathan A., et al. "The Diagnosis and Management of Acute and Chronic Urticaria: 2014 Update." J Allergy Clin Immunol 133.5 May 2014: 1270-1277.
Criado, Paulo Ricardo. "Chronic Urticaria in Adults: State-of-the-Art in the New Millennium." An Bras Dermatol 90.1 (2015): 74-89.
Fine, Lauren M., and Jonathan A. Bernstein. "Urticaria Guidelines: Consensus and Controversies in the European and American Guidelines." Curr Allergy Asthma Rep 15 (2015): 30.
Frigas, Evangelo, and Miguel A. Park. "Acute Urticaria and Angioedema." Am J Clin Dermatol 10.4 (2009): 239-250.
Langley, Emily W., and Joseph Gigante. "Anaphylaxis, Urticaria, and Angioedema." Pediatrics in Review 34 (2013): 247-258.
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