Publication: Analysis of solar urticaria in Thai patients
1
Issued Date
2016-06-01
Resource Type
ISSN
22288694
0125877X
0125877X
Other identifier(s)
2-s2.0-84982284179
Rights
Mahidol University
Rights Holder(s)
SCOPUS
Bibliographic Citation
Asian Pacific Journal of Allergy and Immunology. Vol.34, No.2 (2016), 146-152
Suggested Citation
Narumol Silpaarcha, Chanisada Wongpraparut, Vichit Leenutaphong Analysis of solar urticaria in Thai patients. Asian Pacific Journal of Allergy and Immunology. Vol.34, No.2 (2016), 146-152. doi:10.12932/AP0632.34.2.2016 Retrieved from: https://repository.li.mahidol.ac.th/handle/123456789/40809
Research Projects
Organizational Units
Authors
Journal Issue
Thesis
Title
Analysis of solar urticaria in Thai patients
Other Contributor(s)
Abstract
© 2016, Allergy and Immunology Society of Thailand. All rights reserved. Background: Solar urticaria (SU) is an uncommon photodermatosis characterized by erythema and whealing within minutes to a few hours after exposure to sunlight or an artificial light source. Purpose: To determine the clinical features, photobiological characteristics and treatment outcomes in Thai SU patients visiting a tertiary referral hospital. Method: A retrospective analysis of 13 patients with SU was conducted. Demographic data, disease characters, phototesting results, laboratory investigations, treatment and outcome were evaluated. Results: Of the 13 patients diagnosed with SU from 2000 to 2012, most patients were female (10, 77%). The mean age of onset was 29 years (15-51). The mean duration of SU was 46 months (6-120) at presentation. The most common affected location was the upper extremities (92%), followed by head and neck (77%). The responsible action spectra were visible light in 8 patients (61.5%), ultraviolet A (UVA) in 1 patient (8%), and both visible light and UVA in 4 patients (31%). The median course from disease onset to disease resolution was 63 months (95% confidence interval 30-95). After 13 months and 55 months from the onset of symptoms, 23% and 49% of patients, respectively, were predicted to recover from their symptoms. Conclusion: Solar urticaria is a rare condition in Thailand. The common eliciting spectra of SU were visible light and UVA. Management of SU remains challenging.