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researchSystematic Reviewprofessional1 min read
Pathogenesis and treatment of rosacea: an updated review
Authors · Two AM, Wu W, Gallo RL et al.
Journal · Journal of the American Academy of Dermatology · April 2015
What this means for you
The plain-language read
Rosacea is a multifactorial inflammatory skin disease involving neurovascular dysregulation, innate immune hyperactivity (cathelicidin), Demodex mite overgrowth, and barrier dysfunction. Standard-of-care includes ivermectin 1% cream (for papulopustular subtype), brimonidine 0. 33% gel (for erythematotelangiectatic), oral doxycycline 40mg, and topical metronidazole.
Key findings
- Multifactorial pathogenesis requires multi-pronged therapy
- Subantimicrobial doxycycline (40mg) achieves anti-inflammatory benefit without resistance
- Trigger avoidance (heat, alcohol, sun, spice) is non-negotiable
- Barrier support is foundational — gentle cleansing, ceramides, daily SPF
Practical note
Build a rosacea protocol on barrier support first, then layer subtype-appropriate prescription therapy. Skip exfoliating acids and strong retinoids during flares.
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What this means for your routine
ivermectinAM/PM routine1%
If you're targeting rosacea, this research supports adding ivermectin to your AM/PM routine. Effective concentration range: 1% based on this study.
metronidazoleAM/PM routine1%
If you're targeting rosacea, this research supports adding metronidazole to your AM/PM routine. Effective concentration range: 1% based on this study.
Translated from this study's findings, not a personal prescription. Pair with your existing protocol and your practitioner's guidance.
Technical Summary, For Professional Reference
Clinical context
Rosacea involves neurovascular dysregulation, cathelicidin/KLK5 overexpression, Demodex folliculorum density, and impaired barrier. Subtype-specific therapy: ivermectin 1% for papulopustular, brimonidine 0.33% gel for ETR, oral subantimicrobial doxycycline (40mg MR), topical metronidazole and azelaic acid as foundations.
Ingredients discussed
Full abstract→
Rosacea is a multifactorial inflammatory skin disease involving neurovascular dysregulation, innate immune hyperactivity (cathelicidin), Demodex mite overgrowth, and barrier dysfunction. Standard-of-care includes ivermectin 1% cream (for papulopustular subtype), brimonidine 0.33% gel (for erythematotelangiectatic), oral doxycycline 40mg, and topical metronidazole. Lifestyle triggers (heat, alcohol, spicy food, sun) must be co-managed.
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