Tender violaceous nodule on the palm

• Roy Jiang, PhD,
• Sa Rang Kim, MD,
• Gauri Panse, MD,
• Amanda Zubek, MD, PhD

Affiliations

Roy Jiang, PhD

Department of Immunobiology, Yale School of Medicine, New Haven, Connecticut

Sa Rang Kim, MD

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

Gauri Panse, MD

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

Amanda Zubek, MD, PhD

Department of Dermatology, Yale School of Medicine, New Haven, Connecticut; Correspondence to: Amanda Zubek, MD, PhD, Department of Dermatology, Yale University School of Medicine, 333 Cedar Street, PO Box 208059, New Haven, CT 06520.