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Pediatric lichen planus pigmentosus possibly triggered by mercury dental amalgams
Kamar Belhareth1, Mouna Korbi1, Hichem Belhadjali1
1Dermatology Department, Fattouma Bourguiba University Hospital, University of Medicine, University of Monastir, Monastir, Tunisia.
Abstract:
Lichen planus pigmentosus is uncommon in childhood and its treatment is often challenging. We report a case of cutaneous lichen planus pigmentosus in a 10-year-old boy, without oral mucosal involvement, two months after an amalgam dental restoration. The diagnosis was based on the histopathological examination of a skin biopsy, the positive patch test to mercury, and the improvement after amalgam removal. Our case report suggests that metal allergy may play a role, and amalgam replacement may be followed by clinical improvement.
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