Dark mark underneath foot

I noticed today, there are few small dark patches underneath my foot. There is no pain. There are just patches. What do I do? Please help me out...
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Doctor Answers (1) on Dark mark underneath foot

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Hi . greetings. You have pitted keratolysis. This is caused by bacterial colonisation of - clostridium minutissimum. It's not serious but can cause foul odor and rarely other infections. Will require a course of topical anti biotics and benzoyl peroxide based washes. Please see a dermatologist near you for prescription of the medications. Warm regards Dr Govind S Mittal, excel care hospital, Bangalore.
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