Hives (urticaria): Difference between revisions
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'''Urticaria''', also known as '''hives''', is a dermatological medical condition in which red itchy bumps form on the skin. Hives are usually caused by an [[allergic]] reaction to a food or medication. People with allergies are more prone to develop urticaria; stress and infections can also cause it.<ref> {{cite web | url = http://www.nlm.nih.gov/medlineplus/hives.html | title = Hives (Urticaria) | accessdate = 2011-06-01}}</ref> | '''Urticaria''', also known as '''hives''', is a dermatological medical condition in which red itchy bumps form on the skin. Hives are usually caused by an [[allergic]] reaction to a food or medication. People with allergies are more prone to develop urticaria; stress and infections can also cause it.<ref> {{cite web | url = http://www.nlm.nih.gov/medlineplus/hives.html | title = Hives (Urticaria) | accessdate = 2011-06-01}}</ref>Physical exercise may also cause hives.<ref> {{cite web | url = http://www.aafp.org/afp/2001/1015/p1374.html | title = Hives and Exercise–What It Means and What to Do | accessdate = 2011-06-02 | work = Am Fam Physician. 2001 Oct 15;64(8):1374.}}</ref> | ||
==Symptoms== | ==Symptoms== | ||
Revision as of 18:59, 1 June 2011
Urticaria, also known as hives, is a dermatological medical condition in which red itchy bumps form on the skin. Hives are usually caused by an allergic reaction to a food or medication. People with allergies are more prone to develop urticaria; stress and infections can also cause it.[1]Physical exercise may also cause hives.[2]
Symptoms
Itching and the formation of red welts, called wheals, typify hives. The wheals have clearly defined edges and appear individually or eventually group together forming large reddish formations. A wheal when pressed in the center will turn white: this is called blanching. The wheals can disappear within minutes or remain for hours. "A hive often will go away in 24 hours or less, but bouts can last longer."[3]
Examination
A health care provider can visually diagnose the presence of hives, and tests can determine whether the cause is an allergy.
Treatment
No treatment may be needed for mild hives. Patients can take anantihistamine such as diphenhydramine to help reduce the itching and swelling. Patients who have throat swelling due to hives may receive epinephrine (adrenaline) or steroids. In some severe cases those same medications may be used to treat the condition.
Potential complications
Complications include anaphylaxis and swelling in the throat.[4]
References
- ↑ Hives (Urticaria). Retrieved on 2011-06-01.
- ↑ Hives and Exercise–What It Means and What to Do. Am Fam Physician. 2001 Oct 15;64(8):1374.. Retrieved on 2011-06-02.
- ↑ Hives: Diagnosis, treatment, and outcome. Retrieved on 2011-06-01.
- ↑ Berman, Kevin. Hives. Retrieved on 2011-06-01.