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 ...

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 ...

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 ...