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In a normal case, the swelling will decrease without treatment within 15–30 minutes, but, in extreme cases, itchy red welts may last anywhere from a few hours to days. In some cases, welts are accompanied with a painful burning sensation. [3] This calls for more urgent treatment as the condition can impact on the patient's quality of life.
Physical urticaria is a distinct subgroup of urticaria (hives) that are induced by an exogenous physical stimulus rather than occurring spontaneously. [1] There are seven subcategories that are recognized as independent diseases. [2] [3] Physical urticaria is known to be painful, itchy and physically unappealing; it can recur for months to ...
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. Chronic urticaria is defined as the presence of hives which persist for greater than six weeks. [31] Some of the more severe chronic cases have lasted more than ...
With appropriate treatment, the prognosis for autoimmune urticaria is generally good. Most patients can achieve good control of their symptoms with first-line treatments. However, some patients may have persistent symptoms despite treatment and may require second-line therapies. [32] Relapse is also common in patients with more severe symptoms ...
Cold urticaria (essentially meaning cold hives) is a disorder in which large red welts called hives (urticaria) form on the skin after exposure to a cold stimulus. [1] The hives are usually itchy and often the hands, feet and other parts of the body will become itchy and swollen as well.
Acute generalized exanthematous pustulosis (AGEP; also known as pustular drug eruption and toxic pustuloderma) is a rare skin reaction that in 90% of cases is related to medication. AGEP is characterized by sudden skin eruptions that appear on average five days after a medication is started.
While the cause of chronic spontaneous urticaria is unknown many infividuals with chronic urticaria have been found to have a higher prevalence of various autoimmune diseases. [10] Many patients with chronic spontaneous urticaria report that certain triggers, like stress, infections, certain foods, or nonsteroidal anti-inflammatory drug ...
Cholinergic urticaria or also known as (CholU) and CU, is a rare form of hives that is triggered by an elevation in body temperature, breaking a sweat, or exposure to heat. It is also sometimes called exercise-induced urticaria or heat hives.