What is the role of climate in the pathophysiology of rosacea?

Updated: Aug 14, 2018
  • Author: Agnieszka Kupiec Banasikowska, MD; Chief Editor: William D James, MD  more...
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Answer

Some evidence suggests that harsh climatic exposures damage cutaneous blood vessels and dermal connective tissue. This also includes exposure to solar irradiation, which may explain why rosacea predominately affects the facial convexities and has a tendency to flare in the spring. However, other studies suggest the contrary, in that most patients' symptoms do not worsen in the sunlight and do not flare with an acute exposure to ultraviolet (UV) light.


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