“Downy hair sign”—A clue to autoimmune disease in curly hair

• Li-Chi Chen, MD, MPH,
• Crystal Aguh, MD

Affiliations

Li-Chi Chen, MD, MPH

Department of Dermatology, Lahey Hospital & Medical Center, Burlington, Massachusetts

Crystal Aguh, MD

Department of Dermatology, Johns Hopkins School of Medicine, Baltimore, Maryland; Correspondence: Crystal Aguh, MD, Department of Dermatology, Johns Hopkins School of Medicine, 601 N Caroline Street, JHOC 8th Floor, Baltimore, MD 21287.