BACKGROUND An association between class I and II alleles of the major histocompatibility complex and idiopathic chronic urticaria has previously been observed in different populations, but there are still no studies on Brazilian populations in this regard. OBJECTIVE The involvement of the major histocompatibility complex classes I and II (loci A, B and DR) in Brazilian patients with idiopathi...

Urticaria is a disorder characterized by rapid onset of localized swelling of the skin or mucosa, called wheals or urtica. According to frequency and duration, urticaria can be divided into acute and chronic type. Chronic urticaria is any type of urticaria occurring every day or twice per week, lasting longer than 6 weeks. Chronic urticaria is a common disorder and estimated prevalence is 1% of...

Chronic urticaria is a prolonged disease with unknown etiology and management.in order to determine the association of helicobacter pylori(H.pylori) infection with chronic urticaria,a case-control study was carried out in this regard 95 chronic urticaria patients without any underlying etiology and 190 healthy individuals who were matched for age and sex were evaluated by-anti-H.pylori IgG dete...

Urticaria, one of the most common dermatological disorders across the globe is characterized by itchy wheels with or without angioedema. The incidence of Urticaria in children is about 0.1% to 6% Chronic Urticaria is defined as a daily occurrence of spontaneous wheals, angioedema, or both for >6 weeks. The etiology of chronic Urticaria is multifactorial in children and it can be explored in 20%...

of the evidence on off-label doses of cetirizine for chronic urticaria ( hives) to. If higher than standard doses of antihistamines are to be considered, . Double-blind crossover study of high-dose cetirizine in cholinergic urticaria. Zuberbier T(1), Münzberger C, Haustein U, Trippas E, Burtin B, Mariz SD, Henz BM. Nov 10, 2011 . Urticaria (hives) is a common disorder that often presents with s...

Chronic urticaria is defined as episodic or daily hives lasting for at least 6 weeks and impairs quality of life. Two main subtypes include chronic idiopathic (spontaneous) urticaria and inducible (physical) urticaria, but some patients have urticarial vasculitis. "Autoimmune chronic urticaria" implies the presence of histamine releasing or mast cell activating autoantibodies to IgE or FcϵRI, t...

In general population about 15-20% of subjects have suffered from one episode of urticaria-angioedema syndrome in their life. The etiology of his condition is various and multifactorial. In children the principal cause of acute urticaria is infection, while physical factors are the main agents of chronic urticaria. All those conditions which lack an etiology are named chronic idiopathic urticar...

Background and purpose: Urticaria is a pruritic cutaneous disease characterized by weal and flare.  Acute and chronic urticaria affects the quality of life. Some abnormalities are associate or comorbid with urticaria. The purpose of this study was to examine comorbid conditions in patients with urticaria.  Materials and Methods: We searched in many databases including Google Scholar, PubMed, S...

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...

We report a case of chronic idiopathic urticaria associated with nodular goiter and Graves disease. The urticaria resolved with normalization of the thyroid function.