Orathai JirapongsananurukPreeda SangacharoenkitSureerat PongpreuksaNualanong VisitsunthornPakit VichyanondMahidol University2018-09-132018-09-132009-06-01Asian Pacific Journal of Allergy and Immunology. Vol.27, No.2-3 (2009), 103-1060125877X2-s2.0-70350710150https://repository.li.mahidol.ac.th/handle/20.500.14594/27700The etiologies of chronic urticaria (CU) comprise a wide variety of disorders including chronic infec-tions. The association of sinusitis and CU is controversial due to the lack of a control group. The objective of this study was to investigate the role of silent sinusitis as a cause of CU in children. A sinus X-ray (SXR) was performed in 107 children with CU. SXR abnormalities were found in 52.3% of the patients. Nine patients (8.4%) had symp-toms of sinusitis and were treated with amoxicillin/clavulanate. Five of these patients (55.6%) had CU remission. Forty-seven patients (43.9%) who had an abnormal SXR without sinusitis symptoms were randomized into treated (23 patients) and control (24 patients) groups. Eighteen patients (78.3%) in the treated group and 15 patients (62.5%) in the control group had CU remission (p = 0.24). These data did not support a causal relationship of si-nusitis and CU in children.Mahidol UniversityImmunology and MicrobiologyMedicineArticleSCOPUS