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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 ...
Hives can also be classified by the purported causative agent. Many different substances in the environment may cause hives, including medications, food and physical agents. In perhaps more than 50% of people with chronic hives of unknown cause, it is due to an autoimmune reaction. [7] Risk factors include having conditions such as hay fever or ...
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 ...
A new study finds some COVID-19 vaccine skin reactions, including a measles-like rash and shingles, are rare, and thankfully brief, side effects.
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.
One of the most prevalent forms of adverse drug reactions is cutaneous reactions, [1] with drug-induced urticaria ranking as the second most common type, preceded by drug-induced exanthems. [2] Urticaria, commonly known as hives , manifests as weals, itching, burning, redness, swelling, and angioedema —a rapid swelling of lower skin layers ...
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.
New RSV vaccines are now available to help prevent serious infection in people over 60. Doctors explain the RSV vaccine and its side effects in older adults.