Is exogenous Ochronosis permanent

It can present in exogenous or endogenous form.It is characterized by an asymptomatic hyperpigmentation of the face, sides and back of the neck, back, and extensor surfaces of the extremities.We report a case of exogenous ochronosis in a hispanic woman and discuss the different forms of this condition.Early diagnosis is key in order that the offending agent can be stopped to prevent further disfiguring discoloration.Exogenous ochronosis is an avoidable dermatitis that can be caused by the topical application of compounds such as hydroquinone or phenols.Ochronosis is the bluish black discoloration of certain tissues, such as the ear cartilage and the ocular tissue, seen with alkaptonuria, a metabolic disorder.

Involve an underlying enzymatic defect.Additionally, ochronosis can occasionally occur from exposure to various substances such as phenol, trinitrophenol, resorcinol, mercury, picric acid, benzene, hydroquinone, and antimal.