Shift your free hand to the top of your belly and slide it down the side to feel for the baby's back. If that side is smooth and has even resistance to pressure, that's the back. If you can press in further, it's uneven and you feel a lot of movement, that's the front of the baby.
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 âRunnerâs toeâ itâs 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.
My Toenail Hurts: What Causes Runners Toenails to Fall Off? According to a 2004 review article by E.A. Mailler and B.B. Adams, the cause of black or blue toenail from running is rooted in the repeated impacts that occur with each step. After the initial impact with the ground, there is a brief moment where your shoe has come to a stop but your foot inside of it has not. Your foot slides forward, usually only by a small amount, but this causes your toenails to take the brunt of the impact with the toebox of your shoe.