My ds who is 3 in a couple of weeks is constantly covered in bruises. Now I know some of it is normal however the only bit that worries me is he always has a few along his spine. I vaguely remember reading years ago could be sign of something more sinister so just wondering who elses little ones have bruised spines a lot? Ds is very active and they are not all the way up his spine but up at least half his back. He is also quite thin and has a boney spine.