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The hives associated with aquagenic urticaria are typically small (approximately 1–3 mm), red- or skin-colored welts (called wheals) with clearly defined edges. It most commonly develops on the neck, upper trunk and arms, although it can occur anywhere on the body. Once the water source is removed, the rash generally fades within 30 to 60 ...
The rash and blisters can spread to other areas of the body, which is why it's important to seek treatment early for impetigo. Other symptoms: An impetigo rash is typically itchy, and you may ...
The exact mechanism of the condition is unknown. Some studies have suggested the itching occurs in response to increased fibrinolytic activity in the skin, [5] [6] inappropriate activation of the sympathetic nervous system, [7] increased activity of acetylcholinesterase, [8] [9] or an increase in mast cell degranulation that releases histamine and other chemicals into the body.
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.
Treatment: The bumps go away on their own over several months. However, they are contagious, even to other parts of your own body, so Dr. Zeichner recommends getting professional treatment ...
Shingles may start as an itchy, tingling or burning pain on one side of the face or body followed by a blistering, painful red rash two or three days later. Causes of shingles