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A 31-year-old member asked:

I have some cracked toenails the worst being my big toe right down the middle. what can cause this?

2 doctor answers4 doctors weighed in
Dr. Bradly Shollenberger
Podiatry 36 years experience
Multiple causes: Nail cracking or fissuring can be caused by fungus, damage to the root or matrix as well as a number of dermatological conditions. If there is also discoloration under the nail, fungus is the likely culprit.
Dr. Robert Conenello
Sports Medicine 31 years experience
Many possibilities: There are many possibilities. Most common are, trauma, fungus, lichen plans and psoriasis.

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A 36-year-old member asked:

What could cause the toenail on my big toe to turn dark?

2 doctor answers4 doctors weighed in
Dr. Andrew Schneider
Preventive Medicine 24 years experience
May be a fungus : The darkening toenail could be a sign of a fungus infection. It also may be an injury that caused bleeding beneath the nail. Both are treatable! visit a podiatrist to find out the cause and treatment.

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Last updated Apr 2, 2013

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