Solar Urticaria

Ravits, Margaret

doi:10.1001/archderm.1982.01650160018012

Cited by 22 publications

(3 citation statements)

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“…Although it is accepted that action spectra change over time, little about the subject has been published. [18][19][20] Of the 25 patients who underwent phototesting more than once, the spectra were broadened in 9 and narrowed in 6, suggesting that variation in action spectra with time is common. No literature on prognostic variables has been published.…”

Section: Commentmentioning

confidence: 99%

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Characteristics and Prognosis of Idiopathic Solar Urticaria

Beattie¹,

Dawe²,

Ibbotson³

et al. 2003

Arch Dermatol

144

112

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Background: As little has been published on the course of idiopathic solar urticaria (SU) patients cannot receive comprehensive prognostic advice. Objective: To determine the prognosis and photobiological characteristics of idiopathic SU. Design: Historical cohort study, with inception cohort followed up from time of diagnosis. Follow-up for a median of 4 years (range, 3 months to 26 years) after diagnosis. Setting: Tertiary referral center for the investigation of photodermatoses in Scotland. Patients: The study included 87 patients, 61 (70%) of whom were female, with phototest-confirmed idiopathic SU between 1975 and 2000. Sixty patients (69%) were followed up clinically, and 25 patients (29%) were phototested on 2 or more occasions. Interventions: Investigations at time of diagnosis included monochromator phototesting. Further monochromator phototesting was performed in those patients in whom it was clinically indicated (select subgroup), and all patients who could be traced received a follow-up questionnaire. Main Outcome Measures: Characteristics of SU, responsible wave bands, and prognosis for clinical resolution. Results: The prevalence of idiopathic SU in Tayside, Scotland, is estimated to be 3.1 per 100000. Action spectra were typically broad, with 63% reacting to more than 1 wave band, and the most common provoking wavelengths were the longer UV-A and the shorter visible ones. The majority of subjects were affected perennially (68%), by radiation transmitted through glass (83%) and thin clothing (76%). Coexistent polymorphic light eruption occurred in 20 patients (23%), and another photodermatosis occurred in 6 patients, 3 of whom had chronic actinic dermatitis. In those with SU alone, the mean age at onset was 41 years. The probability of clinical resolution at 5 and 10 years after diagnosis was 0.12 (95% confidence interval, 0.06-0.24) and 0.26 (95% confidence interval, 0.15-0.43), respectively. Conclusion: Idiopathic SU is a chronic disease. The majority of this cohort was still affected after 5 and 10 years.

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Section: Commentmentioning

confidence: 99%

“…17 The action spectrum of SU is usually broad but can vary widely between patients and within an individual over time. [18][19][20] With such heterogeneity, it would appear that a range of chromophores is responsible.…”

mentioning

confidence: 99%

Characteristics and Prognosis of Idiopathic Solar Urticaria

Beattie¹,

Dawe²,

Ibbotson³

et al. 2003

Arch Dermatol

144

112

View full text Add to dashboard Cite

show abstract

“…The spectral output may be dispersed by a holographic grating, which permits the wavelengths to be determined. 34 The most detailed phototesting procedure involves a xenon lamp in combination with a monochromator. The purpose of phototesting is to determine, if possible, the minimum urticarial dose (MUD) at different wavelengths.…”

Section: Phototestingmentioning

confidence: 99%