<s>[INST] I have a presistant cough, whicChatDoctores and goes. At night my lungs feel dry and very hard to breath. I have been to a pulmanary twice and ER twice and they say my lungs are good but have not givven any test just xray and listening to my chest. I have been to ENR doctor who says everything is good. I have been to Heart doctor given eco gram & tress test and all was good. Why can t I breath if I am so healthy? All I get is constant changing of medications, this has been going on for 7 months I need help. [/INST] HelloSign you are having persistent cough with difficult breathing. Such type of symptoms may be due to these reasons, these include.1 Asthmatic allergic bronchitis, some allergen produces bronchoconstriction and this causes Chat Doctor.  Cough increase in the night due to fall of temperature. Predisposing factors are dust, mite, pollen, mold, sudden increase or decrease in temperature, fumes, smoking (active and passive). When such patient visit I advise my patient t to take montelukast+albuterol tablet once or twice in day till complete relief. Hot coffee and steam inhalation also provide relief. Codeine with chlorampheniramine male at cough syrup also help. But this causes addiction. Since this is a prescription  </s>