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As it is often the result of scratches, involving contact with other materials, it can be confused with an allergic reaction, when in fact it is the act of being scratched that causes a wheal to appear. These wheals are a subset of urticaria (hives), and appear within minutes, in some cases accompanied by itching. The first outbreak of ...
The bacteria releases a toxin that causes a bright red blotchy rash that has a sandpaper-like texture, and the rash can spread to the entire body and usually first appears on the groin, neck, and ...
Hives, also known as urticaria, is a kind of skin rash with red and/or flesh-colored, raised, itchy bumps. [1] Hives may burn or sting. [2] The patches of rash may appear on different body parts, [2] with variable duration from minutes to days, and do not leave any long-lasting skin change. [2]
Hives are quite common, though, so it’s a good idea to get familiar with them. Hives, or urticaria, are itchy pink welts that could appear anywhere on your skin. Some are bumps as small as a ...
Cholinergic urticaria typically presents with a number of small papular hives all over the body, that involve cutaneous inflammation (wheals) and severe nerve pain, which usually develops in response to exercise, bathing, staying in a heated environment, spicy foods, or emotional stress.
The differential diagnosis for autoimmune urticaria includes other conditions that can cause hives or similar skin reactions. [32] These can include allergic reactions, other types of urticaria such as physical urticaria (triggered by physical stimuli such as pressure, cold, or heat), and conditions such as mastocytosis and mast cell activation ...
Chronic spontaneous urticaria, despite its cause being unknown, is linked to a higher prevalence of autoimmune diseases, and is often worsened by triggers like stress, infections, certain foods, or nonsteroidal anti-inflammatory drugs. The hives and angioedema seen in CSU is thought to be linked to the degranulation of skin mast cells.
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.