Hi, my 5 year old daughter has a bruise on her leg that I noticed on Sunday evening. It is round, about the size of a mini-donut. In the center, there is a white lump. She says that she didn t hit her leg or run into anything. I would imagine that she would remember hurting herself in order to get a bruise like this. It doesn t hurt for her to walk on it, but she says it does hurt a little when I gently press on the lump. I am also surprised that the bump and the colour of the bruise has not diminished at all since Sunday.