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The persistence of chronic spontaneous urticaria in childhood is associated with the urticaria activity score

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There is little information regarding the etiology and natural course of chronic spontaneous urticaria (CSU) in childhood.


To investigate the etiology, prognosis, and the factors associated with the prognosis of CSU in children.


Data from children with CSU who had been diagnosed between 1992 and 2015 were analyzed. A telephone interview was done to assess the current status of these patients. Remission was defined as the disappearance of urticaria for >6 months.


A total of 222 children with CSU were evaluated. The median age of symptom onset was 8.8 years (interquartile range [IQR], 4.6‐12.3 years), median duration of urticaria was 23 months (IQR, 7‐48 months), and the median sum of the daily urticaria activity score of 7 consecutive days (UAS7) was 28 (IQR, 21‐42). Accompanying angioedema was reported by 107 patients (48.2%), whereas 27.1% of the study population had autoantibody positivity. Autologous serum skin testing results were positive in 43 (34.1%); skin-prick testing results revealed atopy in 55 children (27.9%). Parasites (4.8%), pollen sensitization (1.5%), food allergy (0.9%), urinary tract infection (0.9%), and Hashimoto thyroiditis (0.5%) were determined as etiologic factors of CSU. The patients were followed up for a median time of 15 months (IQR, 5‐36.5 months). Remission was observed in 10.6, 29.3, and 44.5% of the patients in 1, 3, and 5 years, respectively. In multivariate regression analysis, a UAS7 of >28 at admission was found to be a risk factor for persistence of urticaria (odds ratio 6.22 [95% confidence interval, 1.54‐25.15; p = 0.010).


The etiology of CSU in children was mostly idiopathic despite detailed investigation. In childhood, the natural course of CSU was favorable, and nearly half of the patients recovered after 5 years of disease duration. A high UAS7 at admission seemed to be a significant risk factor for the persistence of symptoms.
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Keywords: Children; chronic spontaneous urticaria; prognosis; urticaria; urticaria activity score

Document Type: Research Article

Publication date: 01 March 2017

More about this publication?
  • Allergy and Asthma Proceedings is a peer reviewed publication dedicated to distributing timely scientific research regarding advancements in the knowledge and practice of allergy, asthma and immunology. Its primary readership consists of allergists and pulmonologists.

    The goal of the Proceedings is to publish articles with a predominantly clinical focus which directly impact quality of care for patients with allergic disease and asthma.

    Featured topics include asthma, rhinitis, sinusitis, food allergies, allergic skin diseases, diagnostic techniques, allergens, and treatment modalities. Published material includes peer-reviewed original research, clinical trials and review articles.

    Articles marked "F" offer free full text for personal noncommercial use only.

    The journal is indexed in Thomson Reuters Web of Science and Science Citation Index Expanded, plus the National Library of Medicine's PubMed service.
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