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 ...

There are some medical issues you come to expect after 40: knee pain, high cholesterol, trouble sleeping — you get the picture. Then, there are others that come as a surprise, like how difficult it ...

Medically reviewed by Danielle McNeil, D.P.M Key Takeaways Subungual onychomycosis is the most common type of toenail fungus ...