The cause of rosacea is unknown, but it could be due to some combination of hereditary and environmental factors.

A number of factors can trigger or aggravate rosacea by increasing blood flow to the surface of your skin. Some of these factors include:

  • Hot foods or beverages
  • Spicy foods
  • Alcohol
  • Temperature extremes
  • Sunlight
  • Stress, anger or embarrassment
  • Strenuous exercise
  • Hot baths or saunas
  • Corticosteroids, such as prednisone
  • Drugs that dilate blood vessels, including some blood pressure medications
Aug. 17, 2013

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