Maryam Taburak - Department of Allergy and Clinical Immunology, Kermanshah University of Medical Sciences, Kermanshah, Iran
Seyyed Hamidreza Mortazavi - Department of Allergy and Clinical Immunology, Faculty of Medicine, Kermanshah University of Medical Sciences, Kermanshah, Iran
Marzieh Tavakol - Non- Communicable Diseases Research Center, Alborz University of Medical Sciences, Karaj, Iran

Chronic Urticaria (CU) is one of the most common skin diseases with prevalence ranging between 15 and 25%. This disease takes more than 6 weeks and is often associated with angioedema. In many cases, the cause remains unknown and seems to be an idiopathic disease and may have a profound influence on patients’ quality of life. Drugs, food, viruses, alimentary conservative substance or inhalant substances often seem to be involved in determining CIU skin flare. In the majority of cases, there is no identifiable underlying etiology despite extensive evaluation but if the etiology of the disease is diagnosed, it can be cured. Despite a general agreement that bacteria infection and parasitic infestations can be involved in the pathogenesis of CIU, proven evidence of these relationships is lacking. The aim of this study is to assess the efficacy of Helicobacter pylori infection eradication in improvement of quality of life in patients with CIU. In this clinical trial study, 62 CIU patients were enrolled. The patientssuffering from chronic urticaria were randomly divided into two groups: cases the patients infected with Helicobacter pylori received Omeprazole, Metronidazole, Clarithromycin (OMC) for 2 weeks and controls (placebo). The patients’ quality of life was compared using Chronic Urticaria Quality of Life Questionnaire (CU-Q2oL) beforethe treatment and one month after the treatment. The data were analyzed using SPSS 22. There was no significant difference between two groups receiving OMC or placebotreatments regarding the quality of life before the treatment (P> 0.05). However, one month after the treatment a significant difference was observed (P<0.05). The resultsshowed that the prescription of OMC was not effective in improving the quality of life of the patients suffering from chronic urticaria.

Chronic Urticaria Idiopathic (CIU), Helicobacter Pylori Infection, Quality of Life, CU-Q2oL.