My DD’s legs are covered in bruises that she can’t remember how she did them. I must admit - I did google and started to trawl, panic levels rising, through google pages of topics like childhood cancer…. But then I had to stop myself…
children are always playing, running, jumping.., they will have bruises, even big ones that looks like the ones in your photo. Your DD has probably knelt on something or bumped something.
if it were something like one of those cancers (I assume that’s what you’re worried about) the bruises would be bigger, more purple - like blood loss under the skin.
if you’re concerned, call the GP but try to relax OP, stop googling and try to think about something else. Xx