Short answer · Medically reviewed summary · Last updated: 2026-05-08
TL;DR: Tracheobronchomalacia is a condition characterized by excessive flaccidity of the tracheal and bronchial walls, which causes the airways to collapse during breathing. This structural weakness leads to chronic respiratory symptoms, including persistent cough, wheezing, and difficulty clearing secretions, and requires specialized management by pulmonology and otolaryngology teams. What exactly happens in Tracheobronchomalacia? In a healthy airway, rigid rings of cartilage keep the windpipe open.
What is Tracheobronchomalacia
What is Tracheobronchomalacia? Plain-language, medically reviewed definition plus the lived reality told by patients.
TL;DR: Tracheobronchomalacia is a condition characterized by excessive flaccidity of the tracheal and bronchial walls, which causes the airways to collapse during breathing. This structural weakness leads to chronic respiratory symptoms, including persistent cough, wheezing, and difficulty clearing secretions, and requires specialized management by pulmonology and otolaryngology teams.
What exactly happens in Tracheobronchomalacia?
In a healthy airway, rigid rings of cartilage keep the windpipe open. In Tracheobronchomalacia, these cartilaginous rings are either too soft, misshapen, or poorly developed, causing the airway to narrow or close completely during exhalation. This collapse obstructs airflow, affecting the respiratory system by trapping air in the lungs and making it physically exhausting for the patient to breathe.
How is Tracheobronchomalacia classified?
Tracheobronchomalacia is generally categorized by its onset and cause:
- Congenital Tracheobronchomalacia: Present at birth, often linked to developmental issues or underlying syndromes like Polychondritis.
- Acquired Tracheobronchomalacia: Develops later in life, often due to chronic inflammation, prolonged mechanical ventilation, or external compression from surrounding structures.
Who is most commonly affected by this condition?
While exact global prevalence remains difficult to pinpoint due to underdiagnosis, Tracheobronchomalacia is recognized as a rare entity. In infants, it is often a self-limiting condition that improves as the cartilage hardens with age. In adults, it is frequently misdiagnosed as asthma or COPD, though it differs from these conditions because the primary issue is structural airway collapse rather than airway inflammation or constriction.
What differentiates Tracheobronchomalacia from other respiratory diseases?
Unlike asthma, which responds to bronchodilators, Tracheobronchomalacia involves a mechanical failure of the airway walls. Key diagnostic indicators include:
- A characteristic "barking" cough that does not respond to standard asthma medication.
- Dynamic airway collapse visible during functional imaging, such as dynamic CT scans or bronchoscopy.
- Difficulty clearing mucus, leading to recurrent respiratory infections.
Currently, 41 members of the DiseaseMaps community are living with Tracheobronchomalacia, sharing their experiences to help others navigate the diagnostic journey.
Next steps
- Consult a pulmonologist or a specialized center for airway disorders to confirm your diagnosis via dynamic imaging.
- Connect with the DiseaseMaps community to learn from the experiences of others managing Tracheobronchomalacia.
- Discuss airway clearance techniques with a respiratory therapist to manage mucus accumulation.
Medical disclaimer: This information is for educational purposes only and should not replace professional medical advice, diagnosis, or treatment.
References
- NIH Genetic and Rare Diseases Information Center (GARD)
- Orphanet: The portal for rare diseases and orphan drugs
- American Thoracic Society (ATS) clinical guidelines on airway malacia
- PubMed: Current clinical literature on structural airway disease
