Medically reviewed by Danielle McNeil, D.P.M Key Takeaways Subungual onychomycosis affects the nail bed and underside of the nail.  White superficial onychomycosis causes white spots and flaky patches ...

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 ...