Thick yellow toenails are usually caused by a fungal infection called onychomycosis. This can be irritating or painful. It’s less common, but the infection can affect your fingernails as well. Thick ...

Toenail fungus can cause a thickening of the toenail, as well as other changes in appearance. This can lead to pain and discomfort and should be treated promptly to prevent further issues. Changes in ...

Mark Gurarie is a writer covering health topics, technology, music, books, and culture. He also teaches health science and research writing at George Washington University's School of Medical and ...

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 ...

Odds are pretty good that you’ll have the pleasure of fighting off toe nail fungus at some point in your life. Ten percent of adults have it, but the statistics jump to 20 percent and 50 percent of ...

Nail fungus — known by the scientific name of onychomycosis — is a fungal infection of the nail. It can occur on the toenail or fingernail but is most common on the toes. It causes whitening and ...

You may experience pain, discomfort, and infection with a curled toenail. Ingrown toenails are common and often affect your big toe. Emergency care may be needed if you notice red streaks on your ...