Web there are several possible causes of a black nail without injury:

What can cause black nails. Web most nail problems are caused by: Istock causes of black toenail if you see a full black toenail or a black spot on your toenail, it is likely for one of the following three reasons: This trauma could be anything from blunt force trauma to repetitive.

Web what causes a black toenail? It can be in one nail, a few nails, or all of your nails. In some cases, black lines on the nails may be caused by melanoma.

Web when a nail lifts up, the cause is often: Web wearing black nail polish means you have a creative side. As the fungal infection goes.

But black nail polish is. A fungal infection psoriasis injury from an aggressive manicure injury form cleaning under your nails with a sharp object a. Web if not, head to the doctor.

Web melanonychia is a brown or black color in your nail. Web injury to the nail bed can cause blood to accumulate under the nail, creating a black or dark brown discoloration. Melanonychia is a very worrisome entity for most patients.

Malignant melanoma, a serious form of skin cancer; This is a type of skin cancer that can affect the nail bed and cause a black or brown. This is called a subungual hematoma.