INTRODUCTION Chronic urticaria (CU) is defined as the presence of urticaria on most days of the week for a period of 6 weeks or longer. Some studies have reported an association between CU and Helicobacter pylori (H. pylori) infection. AIM To determine the prevalence of H. pylori infection using the stool antigen test in patients with idiopathic CU and to investigate the infected patients wit...

BACKGROUND Nonsedating H(1)-antihistamines are recommended for the treatment of urticaria by the recent EAACI/GA(2)LEN/EDF guidelines. The aim of this study was to compare the efficacy, after 4 weeks of treatment, with levocetirizine 5 mg and desloratadine 5 mg, both once daily in the morning, in symptomatic chronic idiopathic urticaria (CIU) patients. METHODS This multi-center, randomized, d...

In the last few decades, increasing understanding of the pathomechanisms involved in chronic urticaria has highlighted the heterogeneity of different subtypes, and chronic urticaria is now classified as chronic spontaneous urticaria and inducible urticaria. Although many factors are thought to be involved in chronic urticaria, the etiology is yet to be clarified. The purpose of this study was t...

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...

Omalizumab has been investigated in various other conditions including chronic urticaria (CU), perennial and seasonal allergic rhinitis (AR), pruritic bullous pemphigoid, latex allergy, peanut allergy, idiopathic anaphylaxis, hyper-IgE syndrome, chronic rhinosinusitis, interstitial cystitis, aspirin sensitivity, mastocytosis, eosinophilic gastroenteritis and atopic dermatitis. Most patients wit...

Results Serology for hepatitis B was found to be positive in 8 patients (3.38%) in the acute spontaneous urticaria group, in 9 patients (5.35%) in the chronic spontaneous urticaria group and in 5 subjects (2.27%) in the control group. Antibodies to HCV were identified in 3 patients (1.27%) with acute spontaneous urticaria, in 4 patients with chronic spontaneous urticaria (2.38%) and in one subj...