INTRODUCTION Urticaria is a common vascular reaction of the skin involving pruritus and transient wheals surrounded by erythema. It results in plasma extravasation into the dermis, because mast cell degranulation and its byproducts, such as histamine, leukotrienes, cytokines, and chemokines, alter vasopermeability. Urticaria appear abruptly, induced by factors that include allergens, infections...

OBJECTIVE To describe a case of chronic urticaria in a female adolescent associated with Helicobacter pylori infection, confirmed in two different occasions, with improvement of urticaria after the antibacterial treatment. CASE DESCRIPTION A 13-year-old female patient sought medical care with chronic urticaria and epigastric pain unresponsive to medical treatment. Laboratorial tests for furth...

Objective: To determine the prevalence of H. pylori infection in patients with idiopathic chronic urticaria (ICU) and to see if eradication of the bacterium affects the course of the urticaria. Patients and Methods: One hundred patients with idiopathic chronic urticaria and 43 healthy subjects (matched for age and sex) underwent serological testing for H. pylori infection. All patients with idi...

A systemic pro-inflammatory and pro-coagulating state occurs in subjects who have both chronic urticaria and metabolic syndrome. To investigate the prevalence and clinical impact of metabolic syndrome in Korean patients with chronic urticaria, a hospital-based cross-sectional study of 131 patients was performed. Metabolic syndrome was assessed by the criteria of the National Cholesterol Educati...

BACKGROUND The primary role of infections in chronic urticaria (CU) is controversial. We hypothesised that streptococcal tonsillitis (ST) could be a primary cause of CU or acute recurrent urticaria (ARU). METHODS Retrospective study of 14 outpatients observed between January 2000 and December 2009, with CU/ARU and clinical and/or laboratorial suspicion of an aetiopathogenic link with ST. Clin...

Background Angioedema is a highly heterogeneous group of conditions and is characterized by sudden, pronounced swelling of the lower dermis and subcutaneous. Because of its frequent coexistence with urticaria, it is often classified in the same manner as urticaria. However, it also includes categories not associated with urticaria. Angioedema without urticaria is characterized by hereditary and...

Chronic urticaria is a distressing condition with high costs. The aim of this literature review was to assess the relative frequency of causes of chronic urticaria in childhood and to provide guidance on which laboratory tests should be performed. Using PubMed, EMBASE and Cochrane databases, the literature from 1966 to 2010 (week 25) was systematically reviewed. Data from studies conducted on c...

Chronic urticaria is common and patients may present with transient eruption of itchy, eruthematous, edematous swellings of the dermis, which lasts more than six weeks. One type of chronic idiopathic urticaria, and part of it, is the chronic autoimmune urticaria. The chronic autoimmune urticaria is caused by high affinity of IgE receptors (anti-FcRI) and less frequently by anti-IgE autoantibodi...

Article type: Review Article Chronic urticaria is defined as a skin disease with central induration (wheal) and erythema formation around it (flare) that appears at least twice a week and remains at least for 6 weeks continually. The incidence of urticaria in children is about 0.1-3%. Most cases of chronic urticaria occur in children between 6-11 years. Autoimmune and allergy immaturity is one ...

Urticaria is a common and challenging skin disorder. Diagnosis and treatment of urticaria is not limited to the field of dermatology. General physicians, allergologists and clinical immunologists are also commonly involved in the management of patients with urticaria.One of the missions of the Iranian Society of Dermatology is to develop strategies in order to provide the best possible manageme...