Zinc Sulfate in the Treatment of Rosacea: A Randomized, Controlled Trial
|Study Design:||Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Double Blind (Participant, Investigator, Outcomes Assessor)
Primary Purpose: Treatment
|Official Title:||"Zinc Sulfate in the Treatment of Rosacea: A Randomized, Controlled Trial." Prospective, Double Blind, Randomized, Controlled Trial Comparing the Effects of Supplemental Zinc Sulfate and Placebo on the Severity of Rosacea.|
- Severity of Facial Rosacea After 90 Days of Treatment [ Time Frame: 90 days ]Modified Rosacea Severity Scoring System evaluating four signs of rosacea, flushing (transient erythema or redness), erythema (redness), papules and pustules and telangiectasia (spider-veins) ranges from 0 (best, absent) to 12 (worst, severe on all items)
|Study Start Date:||July 2006|
|Study Completion Date:||July 2008|
|Primary Completion Date:||July 2008 (Final data collection date for primary outcome measure)|
Experimental: Zinc sulfate
220 mg of zinc sulfate
Drug: zinc sulfate
zinc sulfate 220 mg bis for 90 days
Placebo Comparator: Lactose
270 mg lactose
placebo bid for 90 days
Rosacea is a common chronic dermatological condition. The epidemiology of rosacea has not been determined extensively, due to part in problems with case definition. Rosacea is usually described as being most common in fair skinned women over the age of 40. However it occurs in most adult populations, including both men and women of all ages, and in people of many complexion types, including African Americans and Asians.
Although rosacea is encountered frequently in primary care and dermatology practices, its precise incidence and prevalence are not known. The etiology and pathogenesis of rosacea are unknown. Both genetic and environmental factors are thought to be important. A wide range of medical and surgical interventions have been used in the management of rosacea, including dietary management, topical and systemic antibiotics, azelaic acid, low dose isotretinoin, and laser treatments for telangiectasia and rhinophyma. No single regimen has been found to be entirely satisfactory.
Zinc has been found to be effective in managing several dermatological conditions, especially acne. It has also been found to be of benefit in dermatological conditions such as viral warts and cutaneous leishmaniasis.
No studies have been published on the use of Zinc in the treatment of rosacea. This will be a prospective, double blind, randomized, controlled trial, comparing the effects of supplemental and placebo on the severity of rosacea. Enrolled subjects will be assigned to one of two study arms.
Subjects and investigators will be blinded regarding treatment. After evaluation, meeting the study criteria,obtaining informed consent, and initiating study related procedures, the subject will take oral study drug or placebo, bid, for 90 days.
Subjects are followed via phone call at one week and 6 weeks after enrollment into the study. At the conclusion of the 90 day study, subjects will be re-examined.
The primary endpoint of this study will be the severity of rosacea at the end of the 90 day intervention period.
The efficacy of Zinc vs. placebo will be assessed by a comparison of the change in the severity of rosacea.
Please refer to this study by its ClinicalTrials.gov identifier: NCT00395226
|United States, Minnesota|
|St. Mary's Duluth Clinic Health System|
|Duluth, Minnesota, United States, 55805|
|Principal Investigator:||Joel Bamford, MD||Essentia Health|