"Corkscrew hairs" in hyperkeratotic follicles are pathognomonic of scurvy, or vitamin C deficiency. Petechiae and subungual hemorrhage may also be seen.
Review Date 7/11/2019
Updated by: Linda J. Vorvick, MD, Clinical Associate Professor, Department of Family Medicine, UW Medicine, School of Medicine, University of Washington, Seattle, WA. Also reviewed by David Zieve, MD, MHA, Medical Director, Brenda Conaway, Editorial Director, and the A.D.A.M. Editorial team.