Background: Progressive macular hypomelanosis is a dermatosis without definite etiology. There is no consensus or first-line therapy in the treatment of progressive macular hypomelanosis, and the treatment options used are very little effective.
Objective: To evaluate the therapeutic efficacy of the topical combination of benzoyl peroxide 5% and clindamycin 1% associated with sun exposure for the treatment of progressive macular hypomelanosis.
Materials and methods: This is a randomized, double-blind, placebo-controlled study in which patients were divided into two groups. Group A used the topical combination of benzoyl peroxide 5% and clindamycin 1% and Group B used gel cream as a placebo. Patients were advised to expose themselves to the sun on a daily basis and were systematically evaluated and photographed. The collected data were entered and analyzed using Epi Info. A p value < 0.05 was considered statistically significant.
Results: Out of the 23 patients included in the study, 13 were in group A and 10 in group B. Eleven patients (85%) in group A had significant clinical improvement and only two patients (20%) in group B showed an equivalent clinical improvement (p = 0.003). Side effects were more frequent in group A (p = 0.003).
Conclusion: The topical combination of benzoyl peroxide 5% and clindamycin 1% is effective in the treatment of progressive macular hypomelanosis.