References
Research Roundup

Abstract
In this regular feature, aesthetic nurse Claudia McGloin presents a brief synopsis of a range of recently published articles on medical aesthetics. Research roundup aims to provide an overview, rather than a detailed summary and critique, of the papers selected. Should you wish to look at any of the papers in more detail, a full reference is provided at the end of each study summary
Little information is available on the prevalence and incidence of photodermatoses around the world, despite their substantial impact on quality of life. The objective of this study was to carry out a systematic review of the literature to establish what is known about these.
The authors performed a detailed search of Medline, CINAHL and Embase from their inception to 2021, to identify any original population-based studies in the English language reporting the prevalence and/or incidence of photodermatoses.
The authors extracted data and organised it according to geographical location. The risk of bias was assessed using a 10-point risk of bias tool for prevalence studies.
The review included 26 studies, of which 15 reported the prevalence of photodermatoses based on samples of the general population and 11 on prevalence and/or incidence from national and international registry data.
It was found that the global prevalence of polymorphic light eruption (PLE) between countries ranged from 0.65% (China) and 21.4% (Ireland). The pooled estimated prevalence of PLE was 10% among the general population, with this increasing with distance from the equator.
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