If your child has been limping and is in severe pain
, it can further aggravate his problem if he continues his activities. So until a diagnosis is made, we would advice bed rest
for your child. Ask him specifically where it hurts. A 3 year old is susceptible to external injuries and it is likely he could have met with a trauma. Carefully examine the soles of his feet for any external injury
. You have mentioned an abnormal blood report. Can you be more specific about the findings. So kindly revert back with the blood report.