When you have nail fungus, the nail turns thick and yellow. At times, it may show some white streaks or spots. This condition is known as onychomycosis. It is more common among older adults. A nail fungal infection takes place when there is a fungal overgrowth. This affects the toenails more than the fingernails. Toenail fungus occurs when fungi grow in between the toenail and the toenail bed. This often occurs through a crack or cut in the toe.
7Causes of Toenail Fungus Infections
More than one kind of fungi can cause a toenail fungal infection. Dermatophytes are a type of mold that is the most common cause of toenail fungal infections. These are fungal microorganisms that feed off keratin which is found in your fingernails and the hair.