Inflammatory disseminated superficial porokeratosis successfully controlled with a combination of topical diclofenac gel and systemic etretinate

Porokeratosis is an uncommon keratinization disorder characterized clinically by annular keratotic plaques and histologically by cornoid lamella, a vertical stack of parakeratotic corneocytes within the horny layer. Disseminated superficial porokeratosis (DSP) manifests with several to hundreds of small annular lesions on sun-exposed and non-sun-exposed body areas [1]. Recently, unusual cases of DSP accompanied by severe pruritus and inflammation have been reported as inflammatory DSP [2, 3]. Here, we report a case of inflammatory DSP successfully controlled with topical diclofenac gel and oral etretinate.

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