<s>[INST] My chest is sore and itchy. I went to the er about a month ago. They did a ekg, chest exrays and blood work. Said everything came back normal. But i still have pain in my chest. I am a smoker trying to quit but not to successful. I just turned 30 and im paranoid something is still wrong. [/INST] Thanks for your question on Chat Doctor. I can understand your concern. Since your ECG is normal, no need to worry about cardiac cause. You are mostly having lung inflammation because you are smoker. Cigarette smoke causes persistent inflammation and irritation in the airways. These cause soreness and itching in the airways. So better to quit smoking as soon as possible. Get done PFT (Pulmonary Function Test) to rule out bronchitis as this can also cause similar symptoms. If PFT is normal, then only smoking cessation is needed to treat your problem. You should enroll in dead diction center. Start psychological counselling about dead diction. Don't worry, you will be able to quit smoking. Hope I have solved your query. Wish you good health. Thanks. </s>