Patient: I have been coughing for more than a month, my throat is itchy and sometimes dry, I cough more than twenty times during the day, two or three times each time, but not at night, I feel a little pain in my chest and a little pain in my bones and joints these days, I don’t have a fever. The day before yesterday, I saw a laryngologist and my throat was normal. Yesterday, I had a CT examination of the chest: the texture of the two lungs is clear, no abnormal density shadow in the two lung lobes, the structure of the two lung doors is intact, the trachea and bronchial openings are clear, there is no abnormal widening of the mediastinum, there are no obvious enlarged lymph nodes in the mediastinum, the heart and large blood vessels are clearly delineated, there is no thickening of the pleura, and there is no obvious sign of fluid accumulation in the bilateral chest cavity. Our doctor here said after looking at the film that there were no obvious lesions in my lungs. As for why I was coughing, he said it was an allergic cough and said there was no good medicine and told me to drink more water. 1. What are the results of my CT scan? Can lung cancer be ruled out? 2. What does the doctor here mean by “no obvious lesions”? 3.What is my cough? How can I be cured? Hello: I think a long-term cough is a chronic cough or a subacute cough (post-infection cough). Is it seasonal? Do you have rhinitis? Is there a history of allergies? Do you have a family history? Any hypertension? (Any patient coughing as a side effect of taking Prilosec) Any esophageal reflux? “All the five internal organs and six internal organs cause coughing, not just the lungs.” It must be combined with the overall medical history to arrive at the correct diagnosis. A CT of the lungs can rule out an infectious cough! Please rest assured. There are also many causes of non-infectious coughs, so I hope you will provide more information and I will keep an eye on your condition.