Cough can be a symptom of a number of respiratory diseases. It can frequently occur after infection. Dry cough that persists may be secondary to respiratory conditions including fibrosis and asthma  and also non-respiratory problems such as acid reflux. It is recognised that chronic cough can impact a great deal on quality of life. We regularly see and investigate patients with cough. Treatment is usually directed at the cause. Management often involves a combination of treatment trials and diagnostic tests