Hives and Angioedema (cont.)
IN THIS ARTICLE
Hives and Angioedema Causes
Patient Comments Read 9 Comments
Hives and angioedema are reactions of the skin to histamine and other chemicals such as bradykinin, leukotriene C4, and prostaglandin D2. These chemicals act on blood vessels and other tissues to produce the clinical signs of hives and angioedema. This process is often, although not always, due to an allergic reaction.
There are many causes of hives and angioedema. At least half the time, the specific cause cannot be determined. When the cause of a medical condition is not known, it is termed idiopathic. Idiopathic hives and angioedema are very common.
Some of the more common triggers of hives and angioedema include the following:
Chronic hives are hives that lasts longer than 6 weeks. This can happen to anyone, but it is most common in women who are 40 to 60 years of age. Chronic hives can last for months or even years, but this is unusual. Although anyone can get hives, some people are at greater risk.
Risk factors for hives and angioedema include the following:
Medically Reviewed by a Doctor on 6/22/2015
YOU MAY ALSO LIKE
Must Read Articles Related to Hives and Angioedema
Patient Comments & Reviews
The eMedicineHealth doctors ask about Hives and Angioedema:
Hives - Home Remedies
What home remedies have been effective for your hives?
Hives - Causes
What caused your hives?
Hives - Describe Your Experience
Please describe your experience with hives.
Hives - Treatment
What kind of treatment are you getting for your hives and angioedema?
Hives - Prevention
What strategies do you use to try to prevent hives?
Hives - Diagnosis
How were your hives diagnosed?
- Early Care for Your Premature Baby
- What to Eat When You Have Cancer
- When to Take More Pain Medication