Rapidly progressive subungual gray-brown melanonychia

• Caroline Echeandia-Francis, BA,
• Michael R. Nock, BA,
• Peggy Myung, MD, PhD,
• Amanda E. Zubek, MD, PhD

Affiliations

Caroline Echeandia-Francis, BA

Yale School of Medicine, New Haven, Connecticut

Michael R. Nock, BA

Yale School of Medicine, New Haven, Connecticut

Peggy Myung, MD, PhD

Department of Dermatology, Yale School of Medicine, New Haven, Connecticut; Department of Pathology, Yale School of Medicine, New Haven, Connecticut

Amanda E. Zubek, MD, PhD

Department of Dermatology, Yale School of Medicine, New Haven, Connecticut; Correspondence to: Amanda E. Zubek, MD, PhD, Department of Dermatology, Yale University School of Medicine, PO Box 208059, New Haven, CT 06520.