The case of a painful blue thumb

• Sepideh Ashrafzadeh, BS,
• Yun Xue, MD,
• Thomas D. Horn, MD,
• John B. Korman, MD

Affiliations

Sepideh Ashrafzadeh, BS

Department of Dermatology, Massachusetts General Hospital, Boston, Massachusetts

Yun Xue, MD

Department of Dermatology, Massachusetts General Hospital, Boston, Massachusetts

Thomas D. Horn, MD

Department of Dermatology, Massachusetts General Hospital, Boston, Massachusetts; Department of Pathology, Massachusetts General Hospital, Boston, Massachusetts

John B. Korman, MD

Upstate Dermatology, Greer, South Carolina; Correspondence to: John B. Korman, MD, Upstate Dermatology, 420 The Parkway, Ste M, Greer, SC 29650.