Bronchiectasis

Bronchiectasis is a long-term condition in which damaged widened airways collect mucus and become prone to infection.

The widened airways do not clear mucus as effectively as healthy airways. Mucus can remain in the lungs, irritate the airway lining and create conditions for repeated chest infections. Bronchiectasis can affect a limited area or more than one part of the lungs.

Coughing up phlegm is a very common presentation of bronchiectasis. A persistent cough, shortness of breath, tiredness, wheeze and chest discomfort may occur. The amount, thickness or colour of mucus can change during a flare-up. Coughing up blood can happen and should be medically assessed, particularly if it is new, repeated or more than small streaks.

Seek urgent care for major breathing difficulty, confusion, blue or grey lips, severe chest pain, or a large amount of blood when coughing. These signs need immediate assessment.

Bronchiectasis can develop after severe or repeated lung infections, blockage of an airway, immune-system problems, or conditions that affect mucus clearance. Sometimes no single cause is found. Identifying contributory conditions matters because managing them can reduce further airway irritation.

Symptoms often vary between a usual baseline and periods of worsening. Repeated inflammation and infection may further impair mucus clearance, so early recognition of a flare-up is useful. A personalised plan commonly explains what your normal mucus pattern is and when to contact the care team.

A history of significant chest infection, poor mucus clearance, inhalation of an object, or an underlying immune or inflammatory condition can lead clinicians to investigate for bronchiectasis. Smoking and air pollution can further irritate the airways, even when they were not the original cause.

A clinician will ask about cough, mucus, infections, breathing and any blood in sputum, then listen to the chest. Imaging is used to look at airway structure; a chest X-ray may be part of the initial assessment, while detailed imaging can confirm bronchiectasis. Spirometry measures how air moves through the lungs and can help guide treatment. Mucus samples and blood tests may help look for infection or an underlying cause.

Treatment aims to clear mucus, treat infections promptly and maintain lung function. A respiratory physiotherapist can teach airway-clearance positions and breathing techniques suited to you. Antibiotics may be prescribed for a suspected bacterial flare-up, and inhaled medicines may help selected people with narrowed airways. Vaccination and treatment of an underlying cause may also form part of care.

Follow your airway-clearance routine even when symptoms are stable, keep hydrated if this is suitable for you, and remain physically active within your ability. Keep a note of your usual mucus amount and colour so changes are easier to recognise. Avoid smoke exposure and discuss travel or activity limitations with your care team.

Repeated infections can worsen breathlessness and fatigue. Some people develop significant bleeding from the airways or respiratory failure during a severe illness, which requires urgent hospital care. Regular review helps clinicians adjust airway clearance and infection plans before symptoms become harder to control.

A respiratory specialist may coordinate testing for an underlying cause and plan longer-term treatment. Contact your clinician promptly when cough, phlegm or breathlessness worsens from your usual baseline, or whenever blood appears in mucus.