9 Surprising Causes of a Black Toenail and Effective Treatments

9 Surprising Causes of a Black Toenail and Effective Treatments

About the experts Farah Moustafa, MD, FAAD , is a board-certified dermatologist, Director of Laser and Cosmetics at Tufts Medical Center, and an Assistant Professor at Tufts University School of Medicine. She’s also a Fellow of the American Academy of Dermatology. Joseph Zahn, MD , is a board-certified dermatologist at George Washington University Medical Faculty Associates and an Assistant Clinical Professor of Dermatology at George Washington University School of Medicine & Health Sciences. He’s also the Medical Director at Regeneron Pharmaceuticals, a biotechnology company. Shari Lipner, MD, PhD , is an award-winning dermatologist and associate professor of clinical dermatology at Weill Cornell Medical Center. She is also the Director of the Nail Division at the New York-Presbyterian Hospital/Weill Cornell Medical Center. Marcia Driscoll, MD , is a board-certified d…