This is Gottron's sign, seen in dermatomyositis (an
inflammatory disease of the muscles and skin). Violet-colored
inflammation over the knuckles is an important diagnostic finding
in dermatomyositis, since other skin conditions produce more
redness.
Review Date: 02/09/2011
Reviewed By: Michael E. Makover, MD, professor and attending in Rheumatology at
the New York University Medical Center, New York, NY. Review
provided by VeriMed Healthcare Network. Also reviewed by David
Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.
A.D.A.M., Inc. is accredited by URAC, also known as the American Accreditation HealthCare Commission (www.urac.org)
