When Red Isn’t Red: Skin Tone, Education Gaps, and Delayed Diagnosis

Background: Early recognition of many dermatologic and systemic conditions including infectious exanthems and inflammatory disorders rely on identification of erythema. Traditional medical textbooks predominantly describe these findings using redness-based terminology derived from lighter skin presentations. In darker skin tones, however, inflammation may present as violaceous, gray, or hyperpigmented changes rather than visible redness. The extent to which textbook descriptions align with real-world clinical presentation across skin tones remains insufficiently examined. This study aims to evaluate how widely used medical textbooks describe erythema-dependent conditions and compare these descriptions with clinical images of confirmed diagnoses across lighter and darker skin tones.

Methods: A structured review of commonly used postgraduate medical textbooks will be conducted to extract textual descriptions of conditions in which early diagnosis depends on erythema-based signs. Descriptive terminology will be analyzed and compared with clinical images of confirmed diagnoses across diverse skin tones from peer-reviewed atlases and image databases. Concordance between textbook language and observed clinical presentation was assessed, with particular attention to whether descriptions adequately reflected findings in darker skin tones.

Results: Currently pending, but preliminary analysis suggests that textbook descriptions overwhelmingly rely on redness-centered terminology without equivalent descriptors applicable to darker skin tones.

Conclusion: Preliminary analysis shows medical textbooks frequently employ erythema-based descriptions that do not consistently translate across skin tones. The mismatch between textual language and clinical presentation may contribute to delayed recognition and inequitable care. These disparities appear rooted in modifiable educational practices rather than inherent diagnostic limitations. Aligning medical education materials with the full spectrum of skin presentations represents a critical and feasible step toward improving diagnostic equity.