Friction-Induced Biphasic Cutaneous Amyloidosis

Primary cutaneous amyloidoses (PCA) are a group of conditions characterized by deposition amyloid in previously normal skin, without association with other skin or systemic diseases. We describe Kazakhstani female 30-year history increasingly spreading hyperpigmented macular as well papular lesions on her upper trunk accompanied pruritus. Moreover, medical included intensely rubbing cotton towel following bathing and showering. On the basis clinical histopathological findings, diagnosis biphasic amyloidosis was made. The present unusual case can be subsumed under mechanically-induced forms amyloidosis. In conclusion, underscores necessity to explore carefully patient’s order discover cause PCA.