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A 21-year-old member asked:

What would be the reason for my toenails to be turning black. they are also becoming hollow underneath. what should i do?

3 doctor answers5 doctors weighed in
Dr. Andrew Oswari
Family Medicine 25 years experience
Onychomycosis: Depending on your age it could be fungus on the toenail. You should see your doctor who could get a scraping and send it to the lab to be analyzed.
Dr. Gregory Fehr
Emergency Medicine 46 years experience
Toenails: You probably have a fungus in your toemails. Many therapies are out there but soaking them in vineger twice a day and using some tinactin (tolnaftate) spray may help.
Dr. Alan Ettinger
Podiatry 50 years experience
Fungus: Is the most likely cause. I suggest you see a podiatrist.

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Last updated May 10, 2017
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