Abstract
Pityriasis lichenoides chronica (PLC) is a rare papulosquamous dermatosis with a relapsing and remitting course. It has been proposed that PLC is a clonal T cell lymphoproliferative disease triggered by an antigenic stimulus. Although the infectious agents and drugs are the possible etiopathological factors, the etiology of PLC still remains unclear. PLC is usually characterized by recurrent crops of erythematous-brown papules predominantly localized on trunk and proximal extremities. Atypical presentations of PLC with unusual sites of the involvement have been described rarely so far. Notably, a significant number of these presentations are acral or segmental variants. Here, to our knowledge, we report the first case of acral PLC presenting as plantar keratoderma.
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