What is the diagnosis for this rash?
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Updated: Apr 21, 2026

Skin Biopsy for Diagnosing Discoid Lupus Erythematosus
Published on: June 10, 2025
Namrata Singh1, Shireesh Saurabh2
1Department of Internal Medicine, University of Iowa Hospital and Clinics Iowa City, Iowa.
Key Clinical Message:
The etiology of rash in a given patient can be so varied. Good history-taking is very important to prevent unnecessary work-up. In this patient with Churg-Strauss syndrome, the rash was due to "coining," a traditional practice followed in Southeast Asian community and had no relation to her underlying disease.
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