My 17 year old son is having chest pain, shortness of breath and his heart rate going up over 100 and irregular. He's been to 2 cardiologists and had CT scans, Echos,a Stress test, an MRI,a drug screen and a Thyroid profile and nothing shows any abnormalities. The 2nd cardiologist said that this is normal but his father passed away at the ge of 36 and had his first heart attack when he was 28, They didn't do an autopsy but the death certiricate said coronary artery disease. It is hard for me to believe that this is normal for a 17 year old boy. Any suggestions?