Hi. Thanks for your query. Noted your history of having intermittent coughing since a few years and dry cough for the last 3 weeks. You are prescribed Symbicort and in fact increased your problem. I would advise you the following based on a long history: Investigations: These are must as there is coughing for a long time- - X-ray of the chest and the sinuses. - CT scan if the X-rays are positive. - Sputum examination - Pulmonary function tests. - Tests of blood, urine. These tests will decide the future course of treatment under the care of a Pulmonologist. I hope this answer helps you.