Urticaria

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Related to urticarial: urticarial vasculitis

urticaria

[‚ərd·ə′kar·ē·ə]
(medicine)
Hives or nettle rash; a skin condition characterized by the appearance of intensely itching wheals or welts with elevated, usually white centers and a surrounding area of erythema. Also known as hives.

Urticaria

 

nettle rash, an allergic reaction characterized by the sudden and rapid appearance on the skin (sometimes also on the laryngeal mucosa) of intensely itching wheals.

Urticaria is often caused by the sting of the nettle and certain other plants. Insect bites, temperature, and chemical agents are also among its causes. Other factors include parasitic worms, chronic constipation, liver and kidney diseases, and allergic sensitivity to some foods (for example, strawberries, citrus fruits, eggs, mushrooms, preserves, certain fish, pork, and chocolate). Urticaria is sometimes caused by hypersensitivity to drugs (especially to those of chemical origin). The rash associated with the condition is a manifestation of the inflammatory reaction and edema of the skin that result from a sudden increase in the permeability of the capillaries in the area. This results from the liberation of histamine from the mast cells of the skin by allergic alteration. Urticaria usually disappears without a trace within a few hours, although it sometimes recurs. It is treated by purgation (by enemas, laxatives), special diet (mostly milk and vegetables, with limited salt intake), and desensitizing and anti-histaminic agents.

REFERENCE

Pavlov, S. T. Kozhnye i venericheskie bolezni, 2nd ed. Moscow, 1969.

R. S. BABAIANTS

References in periodicals archive ?
55) Lesions are pleomorphic, usually urticarial but purpuric, vesicular, polycyclic and targetoid lesions may be present.
These chemicals can induce allergic reactions such as urticarial (hives)--a raised, itchy red rash--swelling of the lips, tongue, eyes and/or face, abdominal pains, vomiting, diarrhea or atopic eczema when the skin becomes dry and cracked.
The most common morphological types of the ACDRs were maculopapular rash (25%), fixed drug eruptions (23%) and urticarial wheals (22%).
Urticarial vasculitis, erythema multiforme and granuloma annulare were rare findings in our patients.
5%) and generalized urticarial and other severe allergic reactions (0.
He had a history of sudden onset chest pain, dyspnea and urticarial rash 15 minutes after the ingestion of an oral dose of 400 mg telitromycin for acute sinusitis.
Meanwhile, 5 out of 12 of the hair samples from pigeon owners have been infected with the fleas (Ceratophyllus colombae) and lice (Menopen gallinae) with clinical manifestation of allergic urticarial reaction and itching (Table 2).
Typically, patients with the polymorphic eruption present with "hivelike" or urticarial papules and plaques, but no blisters, while women with pemphigoid gestationis often have more blistering.
Symptoms include fever, chills, nausea, abdominal pain, malaise, myalgia, urticarial rashes, and marked eosinophilia, resembling serum sickness.
Urticarial vasculitis should be managed in the same way as urticaria.