Recent advances in understanding and managing rosacea.

Area of Science:

• Dermatology
• Immunology
• Pathophysiology

Background:

• Rosacea is a common, chronic inflammatory skin disease affecting the central face with unknown etiology.
• Current classifications rely on clinical subtypes or phenotype analysis.
• The underlying pathophysiology involving genetic and environmental triggers, immune system dysregulation, and neurovascular interactions is poorly understood.

Purpose of the Study:

• To summarize recent advances in rosacea research.
• To discuss the new rosacea classification.
• To address a symptom-based management approach for rosacea.

Main Methods:

• Review of recent scientific findings on rosacea etiology and pathophysiology.
• Analysis of factors contributing to rosacea initiation and aggravation.
• Examination of mediators released by various cells (keratinocytes, endothelial cells, mast cells, macrophages, T cells).

Main Results:

• Genetic and environmental factors trigger rosacea via immune system dysregulation.
• Various cells release mediators like cathelicidin, VEGF, endothelin-1, nitric oxide, and cytokines.
• Neurovascular and neuro-immune pathways contribute to rosacea lesion development.

Conclusions:

• Recent advances have led to a new classification system for rosacea.
• Understanding the complex pathophysiology aids in developing targeted therapies.
• A symptom-based approach is recommended for managing rosacea patients.