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Diagnosing hives. To diagnose hives, your primary care provider or dermatologist will examine your skin and ask questions about your symptoms and any possible causes.
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]
Symptoms are thought to be the result of histamine being released by mast cells on the surface of the skin. Despite the lack of antigens , histamine causes the skin to swell in affected areas. If the membrane that surrounds the mast cells is too weak, it will easily and rapidly break down under physical pressure, which then causes an allergic ...
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.
The histamine release causes allergy symptoms, such as hives. ... and exposures to things that can cause hives. Some diseases, like thyroid conditions, rheumatoid arthritis, or diabetes, can ...
From stress to allergic reactions, these are some common reasons you could be breaking out in hives.