Bronchiectasis happens when your airways are damaged by inflammation. They become wider than usual, and this causes phlegm (mucus) to build up. Too much phlegm can lead to chest infections.

There are many possible causes of damage to your airways, including:

• a severe infection such as pneumonia, tuberculosis (TB), measles, whooping cough or COVID-19
• another condition that affects your lungs such as asthma or chronic obstructive pulmonary disease (COPD)
• breathing in something that damages your lungs
• a problem with your immune system
• conditions such as rheumatoid arthritis
• inflammatory bowel disease such as ulcerative colitis or Crohn's disease

For many people it's not clear what the cause is.

Help and support for bronchiectasis

As well as support from your healthcare team, you may find it helpful to get support from other people with bronchiectasis, either at a local support group or online.

There are also charities that can offer support and information about bronchiectasis.

Asthma and Lung UK

Information and support for anyone affected by lung conditions including bronchiectasis.

• Website: www.asthmaandlung.org.uk
• Helpline: 0300 222 5800