<s>[INST] I have a burning sensation in the right lung and chest and back area. I feel muscle and skeletal discomfort and burning in my sternum and right part of my lung area radiating to the back. I had a chest exray in June 2011 and all was clear. I do smoke cigarettes and smoke about a pack a week.. [/INST] Thanks for your question on Healthcare Magic. I can understand your concern. Since you are active smoker, we should definitely rule out lung infection and bronchitis in your case. Cigarette smoke causes irritation and inflammation in airways. So chances of bronchitis is more. It also causes reduction in lung defence. So lung infection is also common in smokers. So better to consult pulmonologist and get done 1. Clinical examination of respiratory system 2. Fresh chest x ray for lung infection. 3. PFT (pulmonary function test) for bronchitis. You may need antibiotic, inhaled bronchodilator and inhaled corticosteroids (ICS) on the basis of above reports. Quit smoking as soon as possible, it is not a good habit. Don't worry, you will be alright. 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. </s>