Hi Im a 28 year old male who has experienced moderate to severe chest pain in the last 2 years. During this time I have been in and out of ER's and have also had met with a 4 cardiologists and had what I deem to be a thorough cardiac work up. The work up included: multiple ECG's (over 10), a 48 hr. holter monitor, an echocardigram, an event monitor, and a stress test. With the exception of one ECG that showed a Premature Ventricular Contraction the doctors have not been able to find anything. During that time period I have completely elimnated all cafeine, all chocolate, and all stimulant's. Even with that I am still feeling pain. Iniitially my symptoms included an increaed heart rate (tachycardia), with loss of sensation in my left foot and left hand, which were also accompanied with sweating in my hands. At first my symptoms subsided a little bit, but have since come back. Now, I'm completely exercise intolerrant for example if I go walking for 1 mile I experience chronic chest pain and tightness afterwards. In addition the pain has radiated to the top of my of my back to my upper left side. My question is what do I have or what should the doctor be looking for to see what I may have? They have ruled out a heart attack, and the doctor's at the ER have said after a chest x-ray there is no sign of heart enlargement. What might I have, and what can I do to manage or eliminate the pain so I can return back to my active lifestyle? Lastly, I was active throughout my life, I was soccer player, and after that continued to run 3.5 miles a day. For the most part I have maintained a healthy weight to height ratio 5'8" inches tall and a weight of 155-160 during my active years (it has since gone up 168 to 172). My first bout with chest pains came when I used prescription adderall in March of 2009, I have used it since but still experience these symptoms. What might be the problem?