Hi, my 5-year-old son has been complaining of pain in his leg for a few days off and on, though his leg is not visibly bruised or swollen. The pain can last for more than an hour but will then go away for a few hours or even a whole day. Today he began complaining that his cheek hurts the same way, although it s not bruised or visibly swollen. He s also become extremely tired, sleeping 12 hours a night where he would usually only sleep for 10 or 10.5, and ASKING to take a nap every afternoon for an hour or more (extremely unusual behavior for him, since he stopped taking naps about 1.5 years ago). Is this a growth spurt, or could it be something more serious? My son s height and weight are normal (though in the 95th percentile for both) and his appetite and energy level (other than the unusual amount of sleep he requires) haven t changed.