7th June 2025

Cause

Pathogenesis is thought to be multifactorial involving genetic and environmental factors. Potential causes include factors that affect inflammatory or immune response, including various microbes, or vascular dysfunction.  

Certain factors may trigger or worsen rosacea:

• Ultraviolet radiation exposure 
• Increasing age  
• Photosensitive skin types 
• Smoking
• Hot or cold ambient temperature
• Spicy foods and hot beverages
• Alcohol
• Emotional stress and exercises 
• Medication (calcium channel blockers, topical corticosteroid)