RESUMO
Abstract Chemical leukoderma occurs due to the toxic effect of a variety of chemical agents. Mechanisms include either destruction or inhibition of melanocytes. We report two male patients (36 and 51 years old) who presented with multiple hypopigmented macules and patches on the neck, wrist, and legs after exposure to dimethyl sulfate in a chemical industry. Physical examination revealed irregular depigmentation macules with sharp edges and clear hyperpigmentation around the lesions. History of repeated exposure to a chemical agent can help the clinical diagnosis of chemical leukoderma. This diagnosis is very important for prognosis and therapeutic management of the disease.
Assuntos
Humanos , Masculino , Adulto , Pessoa de Meia-Idade , Ésteres do Ácido Sulfúrico/toxicidade , Hipopigmentação/induzido quimicamente , Hipopigmentação/patologia , Dermatite Ocupacional/etiologia , Dermatite Ocupacional/patologia , Pele/efeitos dos fármacos , Pele/patologia , Hiperpigmentação/induzido quimicamente , Hiperpigmentação/patologia , Melanócitos/efeitos dos fármacos , Melanócitos/patologiaRESUMO
Chemical leukoderma occurs due to the toxic effect of a variety of chemical agents. Mechanisms include either destruction or inhibition of melanocytes. We report two male patients (36 and 51 years old) who presented with multiple hypopigmented macules and patches on the neck, wrist, and legs after exposure to dimethyl sulfate in a chemical industry. Physical examination revealed irregular depigmentation macules with sharp edges and clear hyperpigmentation around the lesions. History of repeated exposure to a chemical agent can help the clinical diagnosis of chemical leukoderma. This diagnosis is very important for prognosis and therapeutic management of the disease.