my son has had a fever, for last 2.5 days. he is freezing too touch, then he is boiling to touch but still cold. Then also cold icy to touch but burning up inside. he complaing mouth is re<br>aly hurting, was itching last nite now it hurt and makes him feel sick if tounge touches top of mouth. alos he as bin complaing off knee's aching, now underneath feeling really hurt he say stabbing <br>loss off appitate...plenty of fluids, lack of sleep