Conversation: The conversation between human and AI assistant.
[|Human|] I have sharp pain in chest under left arm and cough up brown mucus in the morning.  Just recovering from pnuemonia and have copd for the last 17 years.  Taking predisone and prilosec. Have to have my oxygen on full 3 ltrs.  Can this pain be more infection?
[|AI|]  Thanks for your question on Chat Doctor. I can understand your situation and problem. COPD patients are at risk of heart disease and lung infection (pneumonia). And in both these conditions, chest pain is seen. So better to first get done ECG and 2d echo to rule out cardiac diseases. If both are normal than no need to worry about heart diseases. Get done chest x-ray to rule out pneumonia. If chest x-ray is also normal than pulmonary embolism and infarction can be the cause. Both are common in COPD patients and can cause severe chest pain. So get done CT Pulmonary Angiography. So consult pulmonologist and discuss all these. First diagnose yourself and then start appropriate treatment. Hope I have solved your query. I will be happy to help you further. Wish you good health. Thanks.