Bronchiectasis increases in incidence and prevalence with age affecting > 1% of people aged 70 and older. It is associated with significant morbidity and mortality. Bronchiectasis can be congenital or acquired following a lung-damaging event such as severe infection, or have an immunological aetiology, but the cause is not always found. It can be associated with inflammatory bowel disease, rheumatoid arthritis and other connective tissue diseases. Most patients with bronchiectasis present with persistent cough and daily sputum production. Bronchiectasis is diagnosed using high resolution CT.