Hello, Thanks for posting, If you are having strong dry cough, then it means something is irritating part of your respiratory system. This could be infectious or non-infectious. Some viral lung infections could present like that (chronic bronchitis/inflammed bronchus). Non-infectious causes, given the above scenario could be due to continuous exposure to an allergen around where you live ( cough be pollen, gas, mold etc), asthmatic cough, pneumothorax (would have produced other symptoms such as shortness of breath, chest pain etc) or a cardiovascular diseases etc. In any case, you will require a pulmologist/pneumologist to handle your situation. Hope this helps