Introduction
Exogenous ochronosis (EO) is an acquired hyperpigmented disorder characterized by bluish-grey skin discoloration on the face, neck, back, or extensor surfaces of the extremities. EO demonstrates histopathological characteristics of…

Exogenous ochronosis (EO) is an acquired hyperpigmented disorder characterized by bluish-grey skin discoloration on the face, neck, back, or extensor surfaces of the extremities. EO demonstrates histopathological characteristics of…