Lichen planus pigmentosus inversus is an uncommon variant of lichen planus and has never been reported with occupational systemic sensitization to metals.
MajimaY, YagiH, IkedaY, et al.Two cases of lichen planus pigmentosus inversus: possible causative role of tightly fitting underclothes. Eur J Dermatol, 2013; 23:904–905.
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MurisJ, GoossensA, GonçaloM, et al.Sensitization to palladium and nickel in Europe and the relationship with oral disease and dental alloys. Contact Dermatitis, 2015; 72:286–296.
