Conversation: The conversation between human and AI assistant.
[|Human|] I have trouble breathing, and feels like someone is sitting on my chest. A little cough in the am just once cough up one littl. thing of muscus then ots gone. Also pain in shoulder and jaw. I have been smoking for 25yrs. Not sure if its copd or blockage of some kind. Maybe cancer?
[|AI|]  Thanks for your question on Chat Doctor. I can understand your situation and problem. In my opinion we should rule out cardiac and Pulmonary causes for your symptoms. Since you are smoker, possibility of coronary artery disease, bronchitis and lung cancer is high. So get done 1. ECG and 2d echo to rule out cardiac disease. 2. Chest x-ray to rule out lung cancer. 3. PUT (Pulmonary Function Test) to rule out bronchitis. In any case, you need to quit smoking as soon as possible. And treatment is based on the diagnosis. So consult doctor and first diagnose yourself and then start appropriate treatment. Quit smoking as soon as possible.