Urticaria (from the Latin urtica, nettle,) commonly referred to as hives, is a kind of skin rash notable for pale red, raised, itchy bumps. Hives might also cause a burning or stinging sensation. Hives are frequently caused by allergic reactions; however, there are many nonallergic causes. Most cases of hives lasting less than six weeks (acute urticaria) are the result of an allergic trigger. Chronic urticaria (hives lasting longer than six weeks) is rarely due to an allergy.
The majority of chronic hives cases have an unknown (idiopathic) cause. In perhaps as many as 30–40% of patients with chronic idiopathic urticaria, it is caused by an autoimmune reaction. Acute viral infection is another common cause of acute urticaria (viral exanthem). Less common causes of hives include friction, pressure, temperature extremes, exercise, and sunlight.
Other articles related to "chronic urticaria, urticaria":
... rarely determine any particular cause of disease for chronic urticaria ... regular allergy testing results in identification of a problem or relief for people with chronic urticaria ... Regular allergy testing for people with chronic urticaria is not recommended ...
... For acute urticaria, some topical creams, such as hydrocortisone, fluocinonide, or desonide, can also be prescribed to relieve itching ... To boost relief for severe anaphylactic urticaria, a dermatologist will also administer steroid shots intramuscularly ... afamelanotide (formerly CUV1647), for the treatment of solar urticaria, a type of urticaria that develops in response to exposure to specific wavelengths of light ...
Famous quotes containing the word chronic:
“Or would interior time, that could delay
The sentence chronic with the last assize,
Start running backwards with its timely lies,
I might have time to live the love I say....”
—Allen Tate (18991979)