Left Arm Pain And Numbing Of The Hand And Arm!

Left arm pain and numbing of the hand and arm! Went to docs and they are sending me for a study of ateries on tues. its getting worse by the day with heart palpatations! Im 44, smoker, overweight and have high blood pressure! Do you think im just having a panic attack?thanks alot glad i could read your advice, you should let people know this a waste of time unless they have money!