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Archived diagnostic challenge

What’s your diagnosis?

Case #006 · Archive play does not affect the daily streak.

Close-up of a lower leg and foot showing diffuse dark-red to violaceous edema and confluent purpuric erythema with a sharply demarcated proximal border. — Image © Rosales Santillan M, Dietert JB, and Jahan-Tigh R; sourced via DermNet CC BY-NC-ND 4.0

Close-up of a lower leg and foot showing diffuse dark-red to violaceous edema and confluent purpuric erythema with a sharply demarcated proximal border. — Image © Rosales Santillan M, Dietert JB, and Jahan-Tigh R; sourced via DermNet CC BY-NC-ND 4.0

Stage 1 of 55 points available

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Study the image, then choose the most specific diagnosis. A new clue appears after each incorrect attempt.

Diagnosis

Catalog 2026.10-eba-expansion.1 · Searches canonical terms and common aliases

Dermdle is intended for medical education and is not medical advice or a diagnostic tool.

A daily visual diagnosis challenge designed for dermatology education, with documented sources and an accountable editorial workflow.

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Dermdle is intended for medical education and is not medical advice or a diagnostic tool.