When Maria Delgado noticed a dark streak under her big toenail, she assumed it was from dropping her gym bag on her foot. Six months later, that seemingly innocent mark led to a diagnosis that saved ...

Having a toe infection is no fun, especially if you’re on your feet a lot. An infection can start small and build up to the point where you can’t ignore it any more. Here’s what to look for and what ...

What is an ingrown toenail? Ingrown toenails, a condition also known as onychocryptosis, occur when the edge of a toenail cuts into the tissue surrounding it or when the skin around a toe grows over ...

If you're a runner, you know that black toenails are common—but that doesn't mean you have to put up with them. Beth Skwarecki is Lifehacker’s Senior Health Editor, and holds certifications as a ...

Toenail discoloration is a common issue. Possible causes of discolored toenails range from minor toe injuries and fungal infections to more severe health conditions, such as melanoma. Toenails are ...

Wriggling toes in the sand and wearing sandals are warm weather treats, unless you’d rather keep your toes under wraps due to thickened, yellowish nails. Nail fungal infections (known as onychomycosis ...

Cellulitis is a bacterial skin infection that often affects the legs and feet. A person may develop cellulitis in the toenails due to another infection, such as athlete’s foot, or as a symptom of an ...

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