9 year old boy, healthy, no allergies, NKDA. In the last two months, has become sick, very suddenly at night. No fever, no vomiting (though he thinks he might). Severe headache, hot/cold, general malaise. attributed it to dehydration first few times but I have been strict about water intake as of late. worse night was tonight, he seemed to not be able to get comfortable at all (body aches?) Cool compresses helped, finally asleep. Seems like the flu but no fever and usually wakes up feeling 100%. Any ideas?