What causes cold cough asthma bronchitis pneumonia tuberculosis lung cancer and cystic fibrosis?

Answer 1

The question "what causes a cold, cough, Asthma, bronchitis, pneumonia, tuberculosis, lung cancer, and cystic fibrosis" is too broad to be explained in one answer. Each condition has it's own causes (example: a cold is from a virus; tuberculosis is from the TB organism). But at the root of each of these is the start of a mechanism or microorganism that causes irritation of the bronchi/bronchioles and lung tissue, restriction of lung expansion, and often resulting in a type of cough specific to that condition or disease. For example, pneumonia can often create serious lung sounds that help define how serious the pneumonia is (such as "rales" or "rhonci") but a general cough from a viral cold usually only produces some wheezing and cough. Again, each of the conditions or diseases you listed have a specific and different causative factor, but each can have direct effects on respiration.