COPD – Keeping well this winter (Mar 2017)Chronic Obstructive Pulmonary Disease (COPD) is an umbrella term for a number of lung diseases that can make breathing difficult. This includes emphysema and chronic bronchitis. For many people with COPD, winter can be a time for flare-ups. Your doctor might call this an exacerbation. Even though COPD is a long-term condition, there are things you can do to slow the disease and improve your day-to-day life.