Erythrasma

Erythrasma

Overview

Erythrasma is a common superficial bacterial skin infection caused by Corynebacterium minutissimum. It produces well-demarcated, reddish-brown, slightly scaly patches in intertriginous (skin fold) areas. It is often mistaken for a fungal infection. Diagnosis can be confirmed with a Wood's lamp, which shows characteristic coral-red fluorescence.

Key Symptoms

• Well-demarcated, reddish-brown patches
• Fine scaling on the surface
• Mild itching, often asymptomatic
• Located in skin folds and moist areas
• Patches may slowly enlarge over time
• Coral-red fluorescence under Wood's lamp examination

Affected Areas

Groin, Axillae (armpits), Inframammary folds, Toe web spaces, Intergluteal cleft

Care Instructions

1. Topical erythromycin or clindamycin applied twice daily for 2 weeks is first-line treatment.
2. Keep affected areas clean and dry.
3. Antibacterial soaps may help prevent recurrence.
4. Oral erythromycin may be prescribed for widespread or resistant cases.
5. Wear breathable, loose-fitting clothing to reduce moisture in skin folds.
6. Manage underlying conditions like diabetes or obesity that increase risk.

Medical Disclaimer: This information is for educational purposes only and does not replace professional medical advice. Always consult a qualified dermatologist for diagnosis and treatment.

Prevalence: Common; affects approximately 4% of the population, more prevalent in warm, humid climates and in diabetics