Journal of cutaneous medicine and surgery
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Postinflammatory hyperpigmentation (PIH) commonly occurs in Fitzpatrick skin types III to VI and can have a considerable impact on quality of life. The majority of cases will improve spontaneously, but this can take months or even years to resolve and in some cases can be permanent. Treatment may be prolonged, lasting 6 to 12 months or longer for adequate restoration of normal pigmentation. ⋯ More randomized controlled clinical studies in large numbers of PIH patients are needed to provide standardized measurable outcomes in this indication.