Hyperpigmented Macules and Patches on the Face: Exogenous Ochronosis or Lichen Planus Pigmentosus?
JDD authors Deepika Narayanan, MD and Stephen K. Tyring, MD, PhD, MBA present a case of a patient with a 10-year history of blue-black macules and patches on the face and an associated history of skin- lightening cream usage. The skin lightening cream contained hydroquinone, which is often associated with exogenous ochronosis (EO). Interestingly, the biopsy did not show characteristic findings of …
JDD authors Deepika Narayanan, MD and Stephen K. Tyring, MD, PhD, MBA present a case of a patient with a 10-year history of blue-black macules and patches on the face and an associated history of skin- lightening cream usage. The skin lightening cream contained hydroquinone, which is often associated with exogenous ochronosis (EO). Interestingly, the biopsy did not show characteristic findings of … 
Macular dermal hyperpigmentation is an umbrella term, explains Dr. Pearl E. Grimes, symposium chair and clinical professor of dermatology at the University of California, Los Angeles. In an interview with Next Steps in Derm, in partnership with Pigmentary Disorders Exchange Symposium, Dr. Grimes outlines the most common types of macular dermal hyperpigmentation and the factors that may be at play … 