Erythematotelangiectatic rosacea following occupational ultraviolet radiation injury

摘要

Rosacea is a common chronic inflammatory skin disease predominantly affecting the central facial skin (1). Traditional classification divides rosacea into 4 main subtypes: erythematotelangiectatic rosacea (ETR), papulopustular rosacea (PPR), phymatous rosacea (PHR) and ocular rosacea (1).The definitive pathogenesis of rosacea remains unknown. Several suggested aetiologic mechanisms are based on both basic laboratory research and clinical anecdotal observation (2). The following have been proposed: vasculature, climatic exposures, matrix degeneration, chemicals and ingested agents, pilosebaceous unit abnormalities and microbial organisms (2).