Exogenous ochronosis.
We describe a case of a 70-year-old woman who had been using a skin-lightening cream containing hydroquinone for a previous diagnosis of melasma. She presented a hyperpigmentation predominantly on her cheeks and eyebrows. The biopsy showed deposition of yellow-brown globules in the dermis. A diagnosis of exogenous ochronosis was made. An attempt of treatment using a Q-switched Nd:YAG laser has been initiated recently.
Huerta Brogeras
M
M
Department of Dermatology University Hospital Gregorio Marañón, Madrid.
Sánchez-Viera
M
M
D000368:Aged; D005260:Female; D006801:Humans; D006873:Hydroquinones / Q000009:adverse effects*; D009794:Ochronosis / Q000139:chemically induced*
D006873:Hydroquinones; C031927:hydroquinone