In 2002, the National Rosacea Society assembled an expert committee to develop the first
standard classification of rosacea. This original classification was intended to be updated as
scientific knowledge and clinical experience increased. Over the last 15 years, significant
new insights into rosacea's pathogenesis and pathophysiology have emerged, and the
disorder is now widely addressed in clinical practice. Growing knowledge of rosacea's
pathophysiology has established that a consistent multivariate disease process underlies …