Rosacea is a common disease,but its pathogenesis is still poorly understood.For instance,there is a hypothesis in which subtypes develop in an array or another where subtypes are likely to present separately as part of a syndrome.On the other hand,with the improvement in healthcare and diagnosis techniques,more designed studies have been conducted to investigate associated factors of rosacea such as the effect of sunlight,climate and other risk factors.In this study,updates have
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