submit urlsubmit rss feedadd directoryphysician directoryDirectory of Mobile Health Sites

article

Urticaria or hives is a relatively common form of allergic reaction that causes raised red skin welts. Urticaria is also known as nettle rash or uredo. These welts can range in diameter from 5 mm (0.2 inches) or more, itch severely, and often have a pale border. Urticaria is generally caused by direct contact with an allergenic substance, or an immune response to food or some other allergen. Hives can also be caused by stress.

Pathophysiology


The skin lesions of urticarial disease is caused by an inflammatory reaction in the skin, causing leakage from capillaries in the epidermis, resulting in an edema which persists until the interstitial fluid is absorbed into the surrounding cells.

Urticarial disease are thought to be caused by the release of histamine and other mediators of inflammation (cytokines) from cells in the skin. This process can be the result of an allergic or non-allergic reaction, differing in eliciting mechanism of histamine release.

More on [ Urticaria ]


directory of related categories

 
directory of related topics

Allergies
Allergy :: Special Diets

 
Hives RSS feed
National Institutes of Health (NIH) News Releases

Schizophrenia and Bipolar Disorder Share Genetic Roots
Wed, 01 Jul 2009 15:45:00 -0400
A trio of genome-wide studies -- collectively the largest to date -- have pinpointed a vast array of genetic variation that cumulatively may account for at least one third of the genetic risk for schizophrenia. One of the studies traced schizophrenia and bipolar disorder, in part, to the same chromosomal neighborhoods.
Imaging Technique Allows Researchers to Monitor Protein Changes in Mouse Tumors
Wed, 01 Jul 2009 12:05:00 -0400
A new imaging technique can monitor, in living mice, the HER2 protein found in above-normal amounts in many cases of breast cancer as well as some ovarian, prostate and lung cancers. This new approach, once validated in mice and pending further experiments, could provide a real-time noninvasive method for identifying tumors in humans who express HER2 and who would be candidates for targeted therapy directed against this protein. It may also provide real-time information that will help clinicians optimize treatment for individual patients. The study, published in the July 2009 issue of The Journal of Nuclear Medicine, was conducted by researchers at the National Cancer Institute (NCI) and the National Institute of Biomedical Imaging and Bioengineering, both parts of the National Institutes of Health.
Dynasty: Influenza Virus in 1918 and Today
Tue, 30 Jun 2009 09:10:00 -0400
The influenza virus that wreaked worldwide havoc in 1918-1919 founded a viral dynasty that persists to this day, according to scientists from the National Institute of Allergy and Infectious Diseases (NIAID), part of the National Institutes of Health. In an article published online on June 29 by the New England Journal of Medicine, authors Anthony S. Fauci, M.D., Jeffery K. Taubenberger, M.D., Ph.D., and David M. Morens, M.D., argue that we have lived in an influenza pandemic era since 1918, and they describe how the novel 2009 H1N1 virus now circling the globe is yet another manifestation of this enduring viral family.

CNN.com - Health

Police: Hospital worker swiped shots, spread hep C
Fri, 03 Jul 2009 18:18:42 -0400
A former hospital employee may have exposed hundreds or thousands of surgical patients to hepatitis C when she replaced clean needles filled with the powerful painkiller fentanyl with her own dirty needles filled with saline solution.
Health.com picks top beach, lake getaways
Fri, 03 Jul 2009 13:47:40 -0400
We know your summer vacation time is precious: You want to land where you can truly relax, breathe fresh air, get in some exercise and eat well -- without breaking the bank. That's why we teamed up with a panel of travel and health experts to help us find the healthiest of the nation's most popular beach and lake towns.

 
Subscribe to Conditions_and_Diseases RSS feed

directory of related sites

American Academy of Dermatology - Urticaria - Brief overview of types of urticaria, causes, and treatment. Displays some photographs.

Asthma and Allergy Information and Research - Urticaria - Detailed information on types of urticaria, potential causes, and options for treatment.

Chinese Traditional Medicine and Urticaria - Describes in detail how practitioners in China solve this disorder with TCM herbal products and herbs. Information about TCM books, qigong, tuina and acupuncture included.

DermNet - Urticaria - Information on different types of hives, including cholinergic urticaria and dermographism.
Meta Description: [ Authoritative facts about the skin from the New Zealand Dermatological Society. ]

404 Discovery Health - Hives - Description of hives, symptoms, prevention, treatment, when to call the doctor, and prognosis.

eMedicine Health - Hives and Angioedema - Consumer health resource center providing information on the causes, symptoms, and treatment.
Meta Description: [ Hives is an allergic skin reaction that comes on suddenly. The hives themselves are slightly raised, smooth, flat-topped bumps called wheals (look like mosquito bites) and welts that are usually ... ]

Hives - DrGreene.com - Question and answer format explaining possible causes of hives, as well as treatment and prevention.
Meta Description: [ Dr. Alan Greene talks about hives, as well as hives causes and treatment. ]

Hives - DrGreene.com - Read an article explaining a common rash and its many causes.
Meta Description: [ Read an article explaining a common rash and its many causes. ]

International Chronic Urticaria Society - Extensive clinical and anecdotal information about chronic hives from members of a mailing list support group.

Understanding Urticaria - A flash presentation showing the causes and treatment of urticaria. It also illustrates how steroids suppress urticaria without helping.
Meta Description: [ Understanding Urticaria ]

Urticaria Pigmentosa - Causes, prognosis and treatment.
Meta Description: [ Urticaria pigmentosa is an uncommon rash that usually affects the neck, arms, legs and trunk of children and young adults. The rash consists of reddish-brown spots that turn into hives when they are rubbed hard or scratched. Sometimes the spots will blister. ]

Urticaria.com - Information on the causes and symptoms of urticaria, and explanations of homeopathic treatment plans. Online consultation available.
Meta Description: [ Urticaria information, causes, FAQs, research, new measures, treatment plans on-line. Welcome to natural healing powers of homoeopathy... ]

Hives related videos
Angeli Recounts a Miracle
Next Video
Hives related videos

 

HOMEADVERTISINGABOUT US

articlesartsbusinesscomputersgameshealthhospitalshomekids & teensnewsmobilephysiciansrecreationreferenceregionalscienceshoppingsocietysportsworld


Submit a Site About Become an Editor