Phenotype-Based Treatment Approach for Rosacea
The recommended treatment for rosacea should follow a phenotype-based approach that addresses individual features rather than subtypes, with first-line treatments selected according to the specific manifestations present in each patient. 1, 2
General Measures for All Rosacea Patients
- Implement general skincare measures including sun protection (SPF 30+), gentle cleansers, moisturizers, and trigger factor avoidance as the foundation of treatment 1, 2
- Allow sufficient time for treatments to take effect before considering alternatives (typically 6-12 weeks depending on whether treatment is topical or oral) 1
- Use the minimum treatment necessary to maintain control during maintenance therapy 1, 2
First-Line Treatments by Phenotype
For Inflammatory Papules/Pustules
- Mild: Topical azelaic acid, ivermectin, or metronidazole 1, 2
- Moderate: Topical azelaic acid or ivermectin; consider adding oral doxycycline for faster control 1, 2
- Severe: Topical ivermectin plus oral doxycycline or oral isotretinoin 1, 2
For Persistent Erythema
For Transient Erythema/Flushing
For Telangiectasia
For Phymatous Changes
For Ocular Rosacea
- Mild cases: Lid hygiene and artificial tears 1, 2
- Moderate to severe cases: Ophthalmological referral and oral doxycycline 1, 2
Combination Therapy Approach
- Multiple cutaneous features can and should be treated simultaneously with multiple agents 1, 2
- If first-line treatment fails after an adequate trial period, either:
- Consider an alternative first-line option, or
- Add an additional first-line agent 1
- Moderate and severe presentations typically require combination treatments 1, 2
Special Considerations
- Doxycycline is available in standard formulations (≥50 mg with antibiotic activity) and as a 40-mg modified-release dose with anti-inflammatory but not antibiotic activity 1
- The 40-mg modified-release doxycycline formulation may help reduce concerns about antibiotic resistance 1
- Without maintenance therapy, up to two-thirds of patients may relapse when treatment is discontinued 2
- Newer treatment options like encapsulated benzoyl peroxide 5% show rapid improvement and sustained efficacy 2
Treatment Algorithm Pitfalls to Avoid
- Avoid treating rosacea according to subtypes rather than phenotypes, as this may not address the full spectrum of presenting features 1
- Don't expect a single treatment to address all features of rosacea 1
- Avoid inadequate treatment duration before switching therapies 1
- Don't overlook ocular involvement, which requires specific management approaches 1, 2
- Remember that maintenance therapy is often necessary to prevent relapse 1, 2