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Recurrent Chest Infections: When Further Tests are Needed

Chest infections are infections of the airways (bronchi) that carry air to your lungs or the small air sacs inside the lungs. The former is referred to as bronchitis while the latter is pneumonia. Bronchitis is normally caused by a virus that affects the bronchial tubes while pneumonia, which affects the lungs themselves, may be caused by bacteria, viruses or fungi.

The symptoms of both include a cough, fever and other possible symptoms such as congestion and a runny nose. With pneumonia you may also experience chest pain and feelings of breathlessness and generally feel very unwell. In the case of bronchitis, a phlegmy cough is common.

Most chest infections are short-term and either get better by themselves or can be treated with antibiotics in the case of a bacterial infection. Sometimes, however, you may develop recurrent or chronic chest infections which can be debilitating. It’s important to get a proper diagnosis so that you understand what’s causing the infections and can begin an appropriate course of treatment.

What is a chronic lung infection?

Recurrent lung infections can develop as a result of mucus building up inside the lungs which attracts bacteria. This can lead to inflammation and airway damage and may trigger a condition called bronchiectasis.

What is bronchiectasis?

Bronchiectasis is a long-term (chronic) condition where the lungs become permanently damaged or widened. It can cause a build-up of mucus, which increases susceptibility to infection and may make breathing more difficult. This cycle of infection and inflammation results in a gradual decline of lung function and feelings of breathlessness.

Symptoms of bronchiectasis can develop gradually, and without appropriate treatment they will worsen over time. These symptoms include:

  • Frequent chest infections
  • A chronic cough
  • Coughing up thick mucus which may be greenish, yellow or blood-tinged
  • Coughing up blood
  • Chest pain
  • Breathlessness, wheezing or a whistling sound when breathing
  • Fatigue and unintended weight loss
  • Changes to the fingernails or toenails

You may also experience infections and reduced function in other organs of the body including the liver and pancreas.

Who is at risk of bronchiectasis?

You may be at greater risk of developing bronchiectasis if you:

  • Have had a severe lung infection like whooping cough or tuberculosis
  • Have chronic obstructive pulmonary disease (COPD)
  • Have an inflammatory bowel disease like Crohn’s or ulcerative colitis
  • Have an immune system disorder, such as rheumatoid arthritis, Sjögren’s syndrome or HIV
  • Have alpha-1 antitrypsin deficiency or allergic bronchopulmonary aspergillosis

How are recurrent chest infections and bronchiectasis diagnosed?

If you experience recurrent chest infections or have suspected bronchiectasis, it’s important to get a medical diagnosis. As well as listening to your lungs and checking for any blockages of your airway, your doctor may recommend the following tests:

  • A full blood test to check for signs of infection and anaemia
  • A sputum test to check for bacteria or viruses in the mucus
  • A chest X-ray or CT scan to assess your lung structure. You may need further investigation if abnormalities are detected, such as an endobronchial ultrasound (EBUS)
  • A pulmonary test to assess for normal lung function
  • A purified protein derivative (PPD) skin test of QuantiFERON blood test which is used to check for tuberculosis
  • A sweat test which is used to screen for Cystic Fibrosis, a type of bronchiectasis

FAQs About Recurrent Chest Infections

How are recurrent chest infections treated?

Depending on the results of the tests, you may need further treatment, such as antibiotics, chest physiotherapy, breathing exercises or treatments to thin the mucus in your lungs. Your doctor will suggest an appropriate course of treatment for you.

Is there a cure for bronchiectasis

While bronchiectasis cannot be cured, there are many treatments available that can help to control your symptoms, lower the risk of infection and improve your quality of life.

When should I see a doctor?

Seeing a respiratory specialist as early as possible will help you to understand the cause of recurrent chest infections and, if necessary, you can begin a programme of treatment. We recommend seeking medical help if you have a persistent cough, frequent chest infections or problems breathing due to a phlegmy cough.

Contact us for advice about recurrent chest infections or bronchiectasis.

Considering a Specialist Respiratory Opinion?

Concerned about your breathing or lung health?

If symptoms are persistent, worsening, or affecting daily life, a specialist respiratory assessment can help clarify the cause and discuss appropriate treatment options.



Consultant Respiratory Physician

Dr Shalin Diwanji is a Consultant Respiratory Physician providing specialist assessment and care for a wide range of lung and breathing conditions in London.