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 ...

Yellow toenails are most often caused by a fungal infection. Fungal toenail infections are more common if you have a history ...

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 ...

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 ...