Overview
Erythrasma is a superficial bacterial skin infection caused by Corynebacterium minutissimum, typically affecting intertriginous areas and presenting as reddish-brown patches that fluoresce under Wood's light 2.Diagnosis
Clinical Presentation: Reddish-brown, scaly patches, often in intertriginous areas 2.
Wood's Light Examination: Positive fluorescence (yellow-green) under Wood's light 2.
Microbiological Confirmation: Culture or nucleic acid amplification tests (NAAT) from skin scrapings 2.Management
First-Line Treatment: Topical antimicrobials such as erythromycin 2% ointment or clindamycin lotion 2.
Duration: Typically applied twice daily for 1-2 weeks 2.
Adjunctive Measures: Maintain skin dryness and improve hygiene in affected areas 2.Special Populations
Pregnancy: No specific contraindications noted for topical treatments; consult dermatology for severe cases 2.
Comorbidities: Consider potential interactions with systemic medications like erythromycin (as seen with ergotamine) 2.Key Recommendations
Use topical erythromycin or clindamycin for the treatment of erythrasma 2 (Evidence: Strong).
Confirm diagnosis with Wood's light examination and consider microbiological testing 2 (Evidence: Strong).
Monitor for potential drug interactions, especially with systemic antibiotics like erythromycin, in patients receiving other medications 2 (Evidence: Moderate).References
1 Smakosz A, Kurzyna W, Rudko M, Dąsal M. The Usage of Ergot (. Toxins 2021. link
2 Francis H, Tyndall A, Webb J. Severe vascular spasm due to erythromycin-ergotamine interaction. Clinical rheumatology 1984. link