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Toenails may become black because of an injury, but other nail changes may reflect an underlying condition. Find out some of the causes of black toenails and when to see a doctor.
Black toenails are attributed to a variety of causes, some of which resolve on their own. If your nail doesn't get better, you'll need to see your doctor.
Black Toenail: Common Causes. If your toenail turns black, it’s most likely a bruise under the nail, technically called a subungual hematoma. You can get it from stubbing a toe or from...
A podiatrist explains the common causes of a black toenail (aka a subungual hematoma) and provides tips on how you can restore your toenails to tip-top shape.
From trauma to a toenail fungus, there are many reasons why you may have a black toenail or black spots on a toenail. Here's what it means, how to treat them—and when you should call your doctor.
What is black toenail fungus? If you have a dark, thick toenail, it could be toenail fungus, which is usually caused by a type of fungus called dermatophytes. It affects the toenail and the area beneath the nail and causes color changes, thickening, and abnormally shaped nails.
A black toenail is often the result of trauma to the nail in which the injury bleeds and the blood pools under the nail. It should resolve on its own as the nail grows out. There are other causes for a black toenail, including fungal infections, ingrown toenails, and vitamin B12 deficiency.
Melanonychia is a brown or black color in your nail. It can affect your fingernails or toenails. It can be in one nail, a few nails, or all of your nails. Melanonychia can have many different...
A black toenail occurs when there is bleeding or bruising under the toenail. Learn about symptoms, treatments, complications, and when to see a healthcare provider.
Written by Erica Halpern on July 17, 2023. Last updated August 8, 2024. Medically reviewed by Connie Christou, D. Ch. Discoloured toenails can be unsightly. The condition can stem from an injury, an underlying health issue, or ill-fitting shoes. A black toenail is likely a bruise under the nail, called a subungual hematoma.