ABSTRACT
Cutaneous pseudolymphoma refers to a heterogenous group of benign T-cell or B-cell lymphoproliferative processes that mimic cutaneous lymphoma clinically and sometimes histologically. The causes of cutaneous pseudolymphoma are diverse, including lymphomatoid drug eruptions, lymphomatoid contact dermatitis, arthropod-bite reactions, chronic actinic dermatitis (CAD). Here we describe a case of pseudolymphoma due to hair dye on background of CAD.
ABSTRACT
The diagnosis of exogenous ochronosis is often challenging and requires a high index of suspicion. Herein, we report a case of exogenous ochronosis in a Chinese patient. The condition was caused by the use of bleaching agents, including creams containing hydroquinone. We demonstrate the use of dermoscopy as an invaluable tool for the early recognition of the condition, as well as in the selection of an appropriate site for a skin biopsy.