The fungi usually infect a nail by getting into a:

Why are some people's toenails black. Web toenail fungus, ingrown toenails, and toenail trauma are three of the most common toenail problems. Web there are 5 possible causes of black toenails: Web however, mold or yeast can also infect toenails.

Small cut in the skin surrounding your. Web a black toenail may be caused by: If you spend a day or two running, walking or.

More serious causes include heart disease or melanoma. Toenail discoloration is a common problem. Web if a fingernail or toenail has a new or changing dark streak, it’s time to see a dermatologist for a skin cancer check.

Wear cushioning pads if the toe hurts. Bruise under the nail due to trauma or pressure fungal nail infection ingrown. Toenails turn black because they are bruised (subungual hematoma), regardless of your age.

Web there are several reasons why your toenail can become discolored. While these often look white or. Trauma, whether sudden or repetitive;

Web a trauma, such as stubbing your toe or dropping a heavy object on it, can cause a black nail. Web it caused by a genetic mutation. Web you can get it if your nails are frequently moist or you often wear sweaty socks and shoes.