What Causes Fingernail Fungus?
Fungal infections of the nails, which are also called onychomycosis, are more common on the toes but can occur on the fingers as well. The growth of fungus on your fingernails may be unattractive and cause your nails to become yellow, thick and flaky. According to the National Library of Medicine and the American Academy of Dermatology, causes of fingernail fungus include immune system disorders and injuries to your hands.
