Nail fungus, also known as onychomycosis, is a fungal infection of the nail. It’s more common on toenails than fingernails, probably because toenails are more likely to be confined in dark, moist environments inside your socks and shoes – a perfect breeding ground for fungus.
Typically, nail fungus shows up as white, yellow, or brown discoloration. However, sometimes, nail fungus can appear black. In addition to these colors, the nail may thicken, crack, or even detach from the nail bed.
So, what does black nail fungus look like? What causes it? And how do you treat it? Keep reading to find out, and check out the black nail fungus pictures below to help you identify your symptoms.