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The link between hives and stress is strongest for people who have autoimmune conditions or have other allergy issues and are predisposed to getting hives. But, let's be honest, it can be ...
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 ...
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 ...
The area of skin involved can vary from small to covering the entire body. [1] [2] Dermatitis is also called eczema but the same term is often used for the most common type of skin inflammation, atopic dermatitis. [7] The exact cause of the condition is often unclear. [2] Cases may involve a combination of allergy and poor venous return. [1]
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Treatment Can resolve without treatment, but may require anti-histamines or corticosteroids. 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 ]
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 ...
Still, it should be noted that alopecia areata is unpredictable, and the exact cause can vary by person. Here are some things to avoid when you have alopecia areata. 1.