causes of toenail fungus
Dermatophytes cause almost all fungal toenail infections. Yeasts are a type of fungus that grows on the skin and nails. They are normally present on the human body. Things like illness, antibiotic or birth control pill use, and immune system problems may allow an overgrowth of yeast, leading to a yeast infection.
Fungal nail infections often start after a fungal infection on the feet. They occur more often in toenails than in fingernails. And they are most often seen in adults as they age. You are at higher risk of getting a fungal nail infection if you: Have minor skin or nail injuries. Have a deformed nail or nail disease.