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Current aspects of polymorphous light eruptions in Sweden
Photo-Dermatology
|October 1, 1986
Summary
Polymorphous light eruption (PMLE) is common in Sweden, affecting 21% of surveyed employees. Milder forms of this sun sensitivity disorder appear more prevalent than previously thought in Northern Europe.
Area of Science:
- Dermatology
- Epidemiology
- Photobiology
Background:
- Polymorphous light eruption (PMLE) is a common photosensitivity disorder.
- Previous estimates of PMLE prevalence in Northern Europe are limited.
- Understanding PMLE prevalence is crucial for public health and patient care.
Purpose of the Study:
- To determine the prevalence of polymorphous light eruption (PMLE) in a Swedish workforce.
- To characterize the clinical presentation and risk factors associated with PMLE.
Main Methods:
- A cross-sectional survey was conducted among 412 employees at a Swedish pharmaceutical company.
- A detailed questionnaire assessed symptoms, disease duration, family history, sun exposure habits, and skin type.
- 397 employees (96.4%) completed the survey, allowing for prevalence estimation.
Main Results:
- A total of 83 individuals (21%) reported symptoms consistent with PMLE, predominantly women (89%).
- The mean disease duration was 14 years, with a positive family history reported by 46%.
- Most affected individuals had a high threshold for sun tolerance, with 87% requiring over 30 minutes of sun exposure to trigger eruptions. A hardening phenomenon was observed in 84% of cases.
Conclusions:
- Polymorphous light eruption (PMLE) is a common condition in Sweden, with a higher prevalence than previously reported, particularly milder forms.
- The study highlights the need for increased awareness and diagnosis of PMLE in regions with less intense sunlight.
- Further research into the genetic and environmental factors contributing to PMLE is warranted.