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From SNPedia

Rosacea is a chronic skin condition characterized by facial redness, small and superficial dilated blood vessels on facial skin, papules, pustules, and swelling. It primarily affects people of northwestern European descent and has been nicknamed the "curse of the Celts" by some in Britain and Ireland. Rosacea affects both sexes, but is almost three times more common in women. Rosacea is commonly found in people between the ages of 30 and 50.Wikipedia

Some genetic factors have been found to be associated with rosacea, including [PMID 2565682OA-icon.png]:

  • rs763035
  • HLA alleles:
    • DRB1*03:01
    • DQB1*02:01
    • DQA1*05:01