Case report shows significant improvement in hyperpigmented patches using trifarotene and picosecond Nd:YAG laser, suggesting a promising therapy for LPP.
Lichen planus pigmentosus (LPP) is a rare variant of lichen planus that presents as hyperpigmented patches, most commonly in individuals with darker skin tones, and is difficult to treat effectively. We report a case of a 22‐year‐old Korean male with LPP who showed considerable improvement following combination therapy with trifarotene and a picosecond neodymium‐doped yttrium‐aluminium‐garnet (Nd:YAG) laser. Considering the inherently variable clinical course of LPP and the challenges associated with its treatment, the combination of topical retinoids and picosecond Nd:YAG lasers appears to be a promising therapeutic approach.
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Yoon et al. (2025) studied this question.
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