Hydroxychloroquine-Induced Oral Mucosal Hyperpigmentation

From the ∗Division of Rheumatology, Department of Medicine, University of Southern California Keck School of Medicine, Los Angeles, CA †College of Health Solutions, Arizona State University, Tempe, AZ. The authors declare no conflict of interest. Correspondence: Eaman Alhassan, MD, Division of Rheumatology, Department of Medicine, 2020 Zonal Ave, IRD 4th Floor, Room 423, Los Angeles, CA 90033. E-mail: [email protected].