Interdigital erythrasma

Interdigital erythrasma:
Most common bacterial infection of foot – especially between toes. Frequently confused with fungal infection/tinea. Due to gram negative Corynebacterium minutissium. Has no advancing border (tinea does) – a well-defined border with uniform reddish/erythematous brown colour and scaly, spreads slowly, pruritic – becomes macerated between toes  appears as tinea. Wood’s light  appear coral red colour (characteristic).
Treatment – initially a topical keratolytic or antiseptic; Later  erythromycin

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