My son is 7 years old, on a Beta Blocker, his heart rate goes up over 220 beats per minute at times, was recorded on a Holter Monitor at rest. The last week hes been getting VERY hot and red in the face! Ive taken his fever and nothing. After he finally gets to sleep he wakes up often through the night. Like I said, he s 7, 95lbs and not sure about his height. Thanks