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you are having deep cracks on the heel and they have turned black since one month.
Such problem arises due to inadequate moisture to sole due to cold and exposure to water, harsh soap and sunlight. Lack of moisture leads to crack formation which is painful more on walking. Such cracks are filled in by dirt and catch fungal infection which may lead to discoloration of skin.
You are advised to keep your feet most of the time covered in shoes. You may apply moisturizing creams and petroleum gels.
You are advised to consult your doctor who may take proper history, examine, do the necessary investigations to rule out cause of such symptoms and may advise you proper treatment with antifungal ointments and anticrack creams.
These Q&A’s are for educational purposes and should not be relied upon as a substitute for medical advice you may receive from your physician. If you have a medical emergency, please call 911. These answers do not constitute or initiate a patient/doctor relationship.