"Shedding Light" on How Ultraviolet Radiation Triggers Rosacea.

Treating rosacea begins with avoiding its triggers. Though they vary among patients, UVR is regarded as a universal rosacea trigger. Until now, the mechanism underlying this pathology has resisted characterization. The work of Kulkarni and colleagues sheds light on how UVR causes rosacea inflammation. Their findings appear to apply to all rosacea subtypes and suggest new therapeutic strategies.