Tracheomalacia in Adults: Symptoms, Causes, and Management in the UK

Tracheomalacia is a respiratory condition characterised by the weakening or softening of the tracheal walls. The trachea, commonly known as the windpipe, is supported by C-shaped rings of cartilage that keep the airway open during breathing. In individuals with tracheomalacia, this cartilage loses its rigidity, causing the windpipe to partially collapse, particularly during exhalation, coughing, or physical exertion.

While often associated with infants, acquired tracheomalacia is increasingly recognised in adults. In the UK, it is frequently linked to long-term inflammation, trauma, or complications from other medical conditions. Because the symptoms overlap significantly with common ailments like asthma or COPD, it is sometimes referred to as a 'great mimicker' in respiratory medicine.

The symptoms of tracheomalacia in adults can vary from mild irritation to significant respiratory distress. Patients often describe a cycle of symptoms that flare up during respiratory infections. Key signs to look for include:

• A 'Barking' Cough: A distinctive, harsh, brassy cough is the hallmark of the condition.
• Shortness of Breath: Known as dyspnoea, this often worsens during exercise or when lying flat.
• Stridor: A high-pitched wheezing sound heard when breathing, caused by turbulent airflow through a narrowed pipe.
• Difficulty Clearing Secretions: Because the airway lacks structural integrity, patients often struggle to cough up phlegm, leading to recurrent chest infections.
• Positional Breathing Issues: Symptoms may improve or worsen depending on the position of the neck or torso.

Acquired Tracheomalacia

Unlike the congenital form seen in children, adult tracheomalacia is typically acquired. Common causes identified in UK clinical practice include:

• Long-term Intubation: Prolonged use of a breathing tube in intensive care can exert pressure on the tracheal walls, leading to tissue softening.
• Chronic Inflammation: Conditions such as relapsing polychondritis or severe chronic obstructive pulmonary disease (COPD) can gradually degrade tracheal cartilage.
• Trauma: Direct injury to the neck or chest, or complications from previous neck surgeries (such as thyroidectomy).
• External Compression: Large goitres (swollen thyroid glands) or tumours in the chest can press against the windpipe, causing it to weaken over time.
• Gastro-oesophageal Reflux Disease (GORD): Chronic acid reflux can cause chemical irritation to the airway, contributing to inflammation and structural weakness.

If you suspect you have tracheomalacia, your GP will likely begin by ruling out more common conditions. Under NHS and NICE guidance, the diagnostic pathway usually involves specialized imaging because standard chest X-rays often appear normal. A Dynamic CT Scan is frequently used; this involves taking images while you breathe in and out to see if the windpipe collapses during exhalation.

The definitive 'gold standard' for diagnosis is a fibre-optic bronchoscopy. During this procedure, a consultant respiratory physician inserts a small camera into the airway while the patient is awake or lightly sedated. This allows the doctor to observe the airway collapsing in real-time as the patient coughs or breathes deeply.

Navigating respiratory symptoms can be frustrating, especially if treatments for asthma or bronchitis aren't providing relief. You may wish to speak to a GP online if you are experiencing a persistent, unexplained cough that sounds 'brassy' or if you feel that your inhalers are not working as expected.

An online consultation allows you to discuss your clinical history in detail, including any history of smoking, previous hospitalisations, or neck surgeries. A UK-registered GP can review your symptoms, provide advice on managing breathlessness, and determine if a formal referral to a respiratory specialist for diagnostic imaging is necessary. This is an efficient first step to ensure your concerns are heard and that you are placed on the correct diagnostic pathway.

Treatment for tracheomalacia is highly individualised, focusing on keeping the airway open and managing secretions. Common approaches in the UK include:

Conservative Management

• Chest Physiotherapy: Learning specific techniques to clear mucus without forceful coughing that could collapse the airway.
• CPAP Therapy: Continuous Positive Airway Pressure (CPAP) machines, often used for sleep apnoea, can provide a 'pneumatic splint' to keep the windpipe open at night.
• Treating Underlying Causes: Managing acid reflux or aggressive treatment of respiratory infections to reduce inflammation.

Surgical Interventions

In severe cases where breathing is significantly compromised, a specialist surgeon may suggest tracheobronchoplasty, a procedure to reinforce the back wall of the windpipe. Alternatively, a stent may be placed inside the trachea to hold it open, though this is usually a temporary measure due to the risk of irritation.