I have been suffering from simarlar symptoms to what have been mentioned here. Im 34 yrs old, smoke about 30 cigarettes a day, of which i blow most of the smoke out before i inhale thinking im not smoking as much.lol but havent always.. and i used to drink quite a bit but dont nowdays.....Ive always worked very hard in a physical industry (sandblasting and spraypainting) which isnt a healthy job and very physically and mentally taxing when running jobs and men and makes home life hard as there is alot of time away. About 9 months ago i had to go to a job that was away from home as usual and wasnt feeling well, all i wanted to do was lay on the couch and watch t.v.But I pushed on and went.I thought i had some flu. On the job I noticed I seemed to have no energy and would run out of breath when talking in meeting etc.My chest felt tight and i couldnt concentrate,was having dizzy spells and had to push myself. One night at work i was sitting down and my heart began to beat extremerly hard,,,my vision went strange and my hand went cold and ringing ears.. I thought i was going to die of stroke or something.This past but i didnt feel right after and it happen on another occassion.Felt strange and tired, my body was hurting, palpatations. I would be walking and stop dead and wonder if i could make it to were i was going.I went to a doctor who said i was burnt out?? My blood pressure was 192/104 and 108 bpm.He put me on 50mg of Atenolol a day which had to be stepped up to 100mg and has resolved the heart rate and pressure. But i still get palpatations,anxiety,tight chest .I also feel that i cant see things properly.i see spots of light , floaters and my vision seems grainy.I havent worked for about 6 months due to the way i feel. I have improved in all areas i think as i can play golf etc and dont get puffed or fatigued but do at times get some sought of rush or panic come over me.I couldnt drive a car before as i couldnt concetrate and would feel like i couldnt breath when sitting.But i still feel i cant push to hard.I couldnt handle mental stress at all which has improved.Doctor said it was normal anxiety and i dont need any heart test done..Ive seen 3 different doctors who all said my heart is fine.But havent done any real tests. Any ideas out there??????????