Not sure if that green spot is fungus? Dermatologists explain green nail syndrome, the causes, the best next steps, and how to prevent it from returning.

Types of toenail fungus are more common than you think, especially as we age. Toenail fungus will not go away on its own—it does require medical treatment to cure it. It can take up to a year for ...

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 ...

Toenail fungus often starts with mild nail discoloration or lifting. It’s not usually serious, but the nails may thicken, become brittle, or fall off without treatment. Nail fungus (onychomycosis) is ...