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Summary
Disciform erythrasma, a rare skin infection presentation, can resemble other conditions. Diagnostic tests like Wood's light and skin scrapings quickly identify this unusual cutaneous infection.
Area of Science:
- Dermatology
- Medical Mycology
Background:
- Erythrasma is a common bacterial infection caused by Corynebacterium minutissimum.
- It typically presents in intertriginous areas and fluoresces coral-red under Wood's light.
Observation:
- This case presents disciform erythrasma, an unusual morphologic variant.
- The condition manifested with an atrophic surface in nonintertriginous locations.
- It mimicked other dermatologic disorders such as lichen sclerosus et atrophicus and parapsoriasis.
Findings:
- Disciform erythrasma is a rare presentation of a common cutaneous infection.
- Diagnostic procedures including Wood's light examination, potassium hydroxide preparation, and various stains (Gram, PAS, Giemsa, methylene blue) are effective for differentiation.
- Histopathological examination aids in distinguishing it from similar-appearing dermatoses.
Implications:
- Recognizing disciform erythrasma is crucial for accurate diagnosis and appropriate treatment.
- This variant highlights the diverse clinical presentations of Corynebacterium minutissimum infections.
- Clinicians should consider disciform erythrasma in the differential diagnosis of atrophic skin lesions in nonintertriginous areas.