what is the cause of toenail darkness
An injury â Bruising or a collection of blood under the toenail can cause the nail to appear dark with black, blue and purple shades of color. Often called âRunnerâs toeâ itâs caused by an injury or trauma to the toe. Cancer â A scary thought but it is a very rare condition. Cancer occurring in the nail bed and the surrounding area will show up as dark, tan and or black spots underneath your toenails or fingernails.
Dark Skin â If you have dark skin (African American or black people) it is not uncommon to have tan or dark lines running down your fingernails or toenails. Thought the possibility for cancer should not be ignored. Fungus â A fungal nail infection can cause discoloration of fingernails and toenails. Toenail fungus can cause the nail to appear dark even black. Often though there will be other shades of yellow and green associated with fungus.