A pincer toenail, also known as a trumpet nail or an in-curved nail, is a painful ingrown toenail that occurs when the nail plate curves in. The sides of the nail curve in, pinching the ...

Those discolored and thickened toenails often point to onychomycosis, a toenail fungus infection. Fungi make up 50 percent of all nail problems, and fungus occurs on the toenails four to 10 times ...

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