MY family is really light skinned, and my kids have black and blue marks on their legs that Never disappear. Their legs look really ugly, so they don't wear shorts, only pants. They come from normal bumps, nothing unusual.
Can they be missing vitamins? Is it just because of their skin color?
They literally never go away? Or do they just take a while to disappear?
I bruise pretty easily but the bruises do disappear. When I had bunion surgery, my whole foot was one solid bruise and it lasted over a month but it did eventually go away.
The doctor thought the foot bruising was unusual and he was asking me if I get nose bleeds or if I've ever had trouble stopping bleeding from a cut or anything. Do your children have either of those issues?
You would have to get their blood drawn to get their platelets checked. Low platelets is called thrombocytopenia. You might want to do some research on that and see if you really think that's it. I can't see how all 3 of your children would have the same thing? I bet it's probably just that they bruise easily and they are noticeable due to their skin tone.