If you are a parent, then you probably already know that it’s normal and usual for kids to get all kinds of marks and bruises on their legs, especially if they regularly play outside. So, when this amazing mom, Kristine, noticed a black mark on the back of daughter’s leg, she initially thought it was a bruise. This would have been easy to explain as her 5-year-old daughter spent a lot of time playing outside their home and often got scrapes and bruises. Unfortunately, when the mark started to turn black she took Kailyn to hospital and doctors revealed what it actually…