Epidemiology of rosacea: updated data

Area of Science:

• Dermatology
• Epidemiology

Background:

• Epidemiological data on rosacea are fragmented and methodologically inconsistent.
• Rosacea primarily affects adults around 30, traditionally with a female predominance, though recent studies suggest this may be less pronounced.
• Prevalence estimates in Europe and the US vary significantly (0.1% to >20%), hindering direct comparison due to differing methodologies and populations.

Purpose of the Study:

• To highlight the inconsistencies in current rosacea epidemiological data.
• To identify established and potential risk factors for rosacea.
• To emphasize the need for standardized diagnostic criteria in future research.

Main Methods:

• Review and synthesis of existing epidemiological studies on rosacea.
• Analysis of reported prevalence rates, risk factors, and quality of life impacts.
• Discussion of the limitations of current research and recommendations for future studies.

Main Results:

• Prevalence statistics are highly variable and not comparable across studies.
• Family history and very light skin phototype (Celtic) are identified risk factors.
• Alcohol and coffee are not confirmed risk factors; tobacco may be protective.
• Rosacea significantly impacts quality of life and is linked to depressive symptoms.

Conclusions:

• Current rosacea epidemiological data are insufficient and methodologically flawed.
• Standardized diagnostic and severity criteria (2002, 2004) are crucial for future research.
• Validated quality-of-life scales like RosaQol enable cross-cultural comparisons and assessment of disease burden.