Abstract
Background
Lichen Planus Pigmentosus (LPP), a disorder with stubborn treatment‐refractory hyperpigmentation predominantly affects the darker skin. Deep dermal pigmentary incontinence of LPP renders the condition treatment‐refractory.
Objectives
Lack of a consistently effective depigmenting treatment protocol of inactive LPP mandates exploration of novel approaches. We analyzed the effect of six sessions of modified phenol peel on reduction of pigmentation of LPP in Indian patients.
Methods
The results of a retrospective analysis of the efficacy and safety of six sessions of Croton oil free phenol combination (CFPC) peel done every 3 weeks, for inactive LPP‐associated hyperpigmentation in 17 patients are presented. Efficacy evaluation was done with patient‐reported improvement, physician‐evaluated improvement (photographic comparison of baseline and post‐treatment clinical images), and pre‐ and posttreatment comparison of dermoscopic images using a simple scale.
Results
Out of 17, 5 (29%) patients sustained excellent improvement with >75% reduction of pigmentation. Overall 13 (76%) patients had moderate to excellent improvement, that is, at least 25% or more reduction in pigmentation. The patient‐reported improvement, physician‐graded improvement, and dermoscopic changes—all three measures showed harmonious overlap. Lightening of the background color and reduction in density and color intensity of pigmented structures was observed on dermoscopy in majority of patients. The treatment was well tolerated with no serious local/systemic adverse effects.
Conclusions
Modified phenol peels seem effective in reduction of hyperpigmentation of LPP. They are safe and well tolerated. Thorough priming, stringent sun protection and use of post‐peel adjuvant topicals boost the peel effect and aid in maintaining the effect for up to a year.
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