Retronychia happens when a nail stops growing outward and grows back into the skin. Wearing ill-fitting shoes can cause retronychia by putting pressure on toenails. Treating retronychia early with ...

For years, I’ve had ingrown toenails, meaning the edge of my nail grows into nearby skin, causing me inflammation and pain. This is bad news for a Manhattan dweller like me who walks most places. I ...

An ingrown toenail, or onychocryptosis, is an uncomfortable but common condition in which the edge of your toenail grows into ...