Background: Chronic idiopathic urticaria is defined as urticaria, which lasts for more than 8 weeks and has no apparent etiology. The aim of this study was to examine the causal role of Helicobacter pylori infection in chronic idiopathic urticaria. Methods: Fifty-six patients with chronic idiopathic urticaria and a negative response to skin prick test for common aeroallergens were selected. The...

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...

IMPORTANCE Omalizumab has emerged as a novel and effective treatment option for patients with antihistamine-resistant chronic urticaria. It is unclear whether patients with recurrent urticaria symptoms after discontinuation of omalizumab treatment can benefit from retreatment. OBJECTIVE To assess the response of patients with chronic urticaria who receive omalizumab retreatment. DESIGN, SET...

UNLABELLED Very little is known about the role of interleukin-1β (IL-1β) and interleukin-18 (IL-18) in urticaria. MATERIAL AND METHODS Serum levels of IL-1β, IL-1 receptor antagonist (IL-1RA), and IL-18 were measured in 56 children with urticaria and in 41 healthy subjects. RESULTS Serum IL-1β did not differ between children with acute urticaria and controls. Children with single episode of...

PURPOSE Limited data is available on the prevalence and risk factors of acute and chronic urticaria in children. Our purpose was to determine the prevalence and identify the risk factors of acute and chronic urticaria in Korean children. METHODS This population-based study examined 4,076 children (age 4 to 13 years) who were enrolled in the 2015 prospective Seongnam Atopy Project (SAP 2015) i...

Urticaria is a group of diseases that share a distinct skin reaction pattern. Triggering of urticaria by infections has been discussed for many years but the exact role and pathogenesis of mast cell activation by infectious processes is unclear. In spontaneous acute urticaria there is no doubt for a causal relationship to infections and all chronic urticaria must have started as acute. Whereas ...

Cold urticaria is a disorder in which patients experience pruritus and urticaria within a few minutes after exposure to cold [1]. Cholinergic urticaria, which is also known as generalized heat urticaria, develops after an increase in body temperature [1]. A 34-year-old man presented with urticaria. The urticaria began following exercise and presented with pruritus followed by diffuse punctate w...

Aim. To identify risk factors for urticaria, to determine the relative proportion of the susceptibility to urticaria that is due to genetic factors in an adult clinical twin sample, and to further determine whether the genetic susceptibility to urticaria overlaps with the genetic susceptibility to atopic diseases. Methods. A total of 256 complete twin pairs and 63 single twins, who were selecte...

BACKGROUND: Chronic urticaria is a debilitating disease that considerably affects health-related quality of life, and the Chronic Urticaria Quality of Life Questionnaire is the only questionnaire specifically designed for its evaluation. OBJECTIVE: To evaluate the quality of life of patients with chronic urticaria, using the Brazilian Portuguese version of the Chronic Urticaria Quality of Lif...

Introduction The prevalence of urticaria is 15-20%. Women are twice as likely to be affected. Aim To present the epidemiology of urticaria and angioedema in Poland. Material and methods A questionnaire-based survey was conducted on a representative group of 4,897 individuals, aged 15-74 years. Results A total of 11.2% of respondents reported at least one episode of urticaria symptoms in t...