It is well established that differences in the microbiome—the ecological community of microorganisms that live within and on the human body—plays a role in the development of rosacea and affect the severity of signs and symptoms.

Are they a cause or simply a coincidence? Demodex mites have long been a conundrum for rosacea patients. Unlike other environmental triggers, they are unavoidable, as they are normal inhabitants of facial skin, but they do exist in greater numbers on the skin of individuals with rosacea.^1,2