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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 ...
Injection site reactions (ISRs) are reactions that occur at the site of injection of a drug. They may be mild or severe and may or may not require medical intervention. Some reactions may appear immediately after injection, and some may be delayed. [1] Such reactions can occur with subcutaneous, intramuscular, or intravenous administration.
The histamine release causes allergy symptoms, such as hives. The most common allergic reactions that trigger hives, also known as urticaria, are foods, bug bites, latex, medications, pet dander ...
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 ...
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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 ...
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.
Aquagenic urticaria, also known as water allergy and water urticaria, is a form of physical urticaria in which hives develop on the skin after contact with water, regardless of its temperature. [1] The condition typically results from contact with water of any type, temperature or additive.