<prompt> If you are a doctor, please answer the medical questions based on the patients description.My stomach feels like I have been punched. I get bloated can t breath etc.. I had a staph infection and felt pretty good after antibiotics and now it is more severe and is all day and night. Only relief is when I am sleeping. X-ray and upper gi is normal. I have copd advanced stages, but this only started when I had received radiation 10 mo ago for prostrate cancer and put in hospital for pneumonia then the staph infection. All the doctors say it is my lungs but I think it is something else. Very weak in lower back while pain is there  <response>: Hi and pleased to answer you. All signs You are describing are found in COPD. Indeed, chronic obstructive pulmonary disease COPD is a chronic inflammatory disease of the bronchi most commonly associated with other diseases. It is characterized by progressive narrowing and permanent obstruction of the airways and lungs, resulting in respiratory discomfort. More than 80 of cases are caused by smoking. But as you say it radiation can be the cause. COPD is characterized by non-specific clinical signs: chronic cough, sputum, shortness of breath dyspnea and pain. These symptoms are often underestimated by patients. They appear gradually, insidiously, and worsen over time by increasing dyspnea. Some daily activities become more and more difficult to achieve, and physical activity decreases, sometimes very importantly. This progressive degradation is punctuated by exacerbations, that is to say episodes of aggravation of cough, expectoration and dyspnea. These episodes may require unscheduled visits or hospitalizations. Best wishes 