Treatment of Rosacea: Expert Insight on Trends and Best Practice openaccess articles

June 2015 | Volume 14 | Issue 6 | Editorials | 546 | Copyright © 2015

Linda Stein Gold MD

Department of Dermatology, Henry Ford Medical Center, Detroit, MI

Abstract

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Rosacea is a chronic inflammatory disease that has been estimated to affect 16 million people in America alone.1 It is characterized by a range of clinical symptoms notably erythema, telangiectasia, papules, pustules, plaques, edema, skin discomfort, phymatous changes and ocular involvement.2 In addition to clinical symptoms, the condition is recognized to affect both social and professional lives and can lead to psychosocial issues.1

In clinical practice, patients often present with a specific range of symptoms, with one or two primary symptoms observed as the leading ones. For didactical reasons, the typical classifications outline certain rosacea “subtypes” (erythematotelangiectatic -ETR, papulopustular -PPR, phymatous -PHY and ocular -OR) 2 or subforms such as granulomatous rosacea and Morbus Morbihan.3 When developing the treatment plan for an individual patient, we need to be careful not to try to fit a patient to a subtype, or fit treatment by subtype, but rather identify the leading symptom(s) and tailor the treatment plan to the individual’s set of symptoms. This, in my experience, yields better patient outcomes.

This is an exciting time in the advancement of our understanding and treatment of rosacea, with further elucidation of the pathophysiology coupled with the development of new therapies to treat the disease. Inflammation is the key underlying mechanism, giving rise to the varying symptoms. New scientific data continues to demonstrate the involvement of infiltrates, changes in pro-inflammatory cytokine profile and gene upregulation, therefore raising the need for most patients to receive basic anti-inflammatory therapy.4

Treatment of Inflammatory Lesions

Traditionally, there have been a limited number of treatment options for rosacea. Metronidazole, azelaic acid, and anti-inflammatory dose doxycycline (40 mg) have demonstrated efficacy for the treatment of PPR.5 These drugs are effective and well tolerated but most rosacea patients are not completely clear and flares are common. Doxycycline (40 mg modified-release capsule once daily) is the only FDA approved oral treatment for the reduction of inflammatory lesions in rosacea and has demonstrated a reduction in lesions across all severities of rosacea, combined with a good safety profile.6,7 Ivermectin 1% cream has recently received FDA approval for the treatment of inflammatory lesions of rosacea.8 In my clinic, we treated patients within the ivermectin clinical development program, and demonstrated that ivermectin is an efficacious topical treatment with a good safety profile for up to a year. 9,10 The safety profile was shown to be equal or even better than vehicle alone.9,10 The majority of patients reported overall improvement following treatment as either excellent or good, and 53% felt their disease no longer had an effect on their overall quality of life.9 Ivermectin 1% cream has also demonstrated significant superiority in reduction of inflammatory lesions in patients with moderate to severe PPR compared to metronidazole 0.75% cream, the gold standard in inflammatory lesion treatment.11

Treatment of Facial Erythema

Classified as a primary symptom2, facial erythema represents the reaction of facial skin to the ongoing histological and pathophysiological chronic inflammatory mechanisms underlying the disease. α-1 and α-2 adrenergic receptor agonists are under investigation for the treatment of erythema.13 The α-adrenergic receptor agonist brimonidine gel 0.33% is the first approved therapy for permanent erythema of rosacea12, and has now been in real-world clinical use for over a year addressing the redness that patients suffer. Patients who feel stigmatized or insecure with their appearance due to facial erythema can greatly benefit from brimonidine gel. Patients need to be made aware also that once their level of facial erythema has reduced, other symptoms, such as inflammatory lesions, can be more noticeable. A combination of clinical treatments can be considered to treat different symptoms concomitantly to attain the optimum results for the patient in such cases. Brimonidine gel has demonstrated good efficacy and safety profile in clinical trials and has been shown to be well tolerated in the presence of concomitant therapies for inflammatory lesions.13,14 Currently, topical oxymetazoline hydrochloride cream, an α-1 adrenergic receptor agonist and α-2 adrenergic receptor partial agonist, is in clinical development.13

Optimizing Treatment in Facial Erythema

Tanghetti et al recently explained how to set patient expectations and optimize treatment initiation to ultimately ensure the best results for the patient.15 A well-educated patient will always be more compliant and show potentially better efficacy for treatments administered. Many patients are still unaware of all symptoms or triggers of rosacea. Issues arising from lack of awareness of rosacea can be helped with education around the condition, the importance of avoiding trigger factors, how best to apply topical treatments and what to expect from their treatments. For example, it is important to evaluate the patient for the presence of significant telangiectasia as these will become more noticeable when the background erythema is treated. In

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