Colds tend to cause sneezing, runny nose, watery eyes, fever, general feeling of discomfort, and also cough. If there is no cold but only a cough, the main consideration is bronchitis, pneumonia, cough allergic asthma, chronic obstructive pneumonia, and pleurisy may sometimes cause an irritating cough. Viral infections, bacterial infections, mycoplasma infections and Mycobacterium tuberculosis infections, also tend to cause the above mentioned diseases. Some allergic diseases are also likely to cause it. You need to go to the respiratory medicine department of the hospital for routine blood tests, as well as to take pictures and, if necessary, to have a CT scan of the chest and sputum culture. The results of the examination should be used as a basis for active treatment. It is also necessary to pay attention to diet and rest and to improve the body’s resistance.