Dark Color Nails Causes
Dark Color Nails Causes . The most common reason nails become darkly colored is because of bruising under the nail. That is why in this fastlyhealarticle we talk about the causes of dark spots on the nails and the importance of going to a specialist before their appearance. Dark lines in nails MDedge Family Medicine from www.mdedge.com What causes dark skin around nails? Dark or discolored nails can be a warning sign of a vitamin deficiency or even of a medical condition you should address sooner rather than later. 3.7k views reviewed >2 years ago.