My 10 year old son was run over by an suv, received multipleb skull fractures , broken shin & luckily survives. it has been 14 days & he s now home. he has a 1 1/4 white circle at top of stomach , then red oval marks in a circle (apx 6) around that, over a 2 day period, now on his back (red circular) and face. and just now on arms. what could it be?