<s>[INST] I am 53 and have a nagging feeling of mild uneasiness on the left side of my upper chest slightly below shoulder at about 45 degrees from the shoulder. The ECG is normal but for the past few months I have a feeling of breathlessness on climbing. I am hypertensive of two years and after medication the blood pressure on different days varies between 75-82 / 117-135. Could you tell me the possible cause and advice. Mallickarjun Joshi [/INST] Hello, It is not a heart problem you have, it is a chest problem as I think, may be inflammation in the lung or the layer which surrounds it. You must see a doctor to examine you. Hope I have answered your query. Let me know if I can assist you further. Take care Regards, Dr Salah Saad Shoman, Internal Medicine Specialist </s>