- Articles are available concerning (exogenous) ochronosis
- It can be said here that:
- It is not as rare as we think
- This side effect of hydroquinone use is under-reported and under-diagnosed. Indeed a biopsy (often on the face) is needed to make the diagnosis.
Source of Information: 2012 (09) – Sachdev M. .21st Annual Congress of the EADV (European Academy of Dermatology and Venerology) – Prague (Praha), Czech Republic (česká republika)
Original article: here