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Updated: Aug 14, 2026

Bronchial Thermoplasty: A Novel Therapeutic Approach to Severe Asthma
Published on: November 4, 2010
Progressive pneumonia complicating steroid-dependent asthma
S P Hart1, M I Brown, J Gaddie
1Borders General Hospital, Melrose, Roxburghshire. shart@whart.globalnet.co.uk
Abstract:
We describe a patient who developed pulmonary nocardiosis whilst taking long term oral steroids for asthma. Nocardiosis is more common than is generally appreciated by clinicians, is notoriously difficult to diagnose, and is associated with significant mortality. This patient developed progressive pneumonia despite antibiotic therapy, which is typical of pulmonary nocardiosis. It is important to consider this treatable condition in the differential diagnosis of pneumonia.
Insights
Long-term oral steroid use for asthma can lead to pulmonary nocardiosis, a difficult-to-diagnose pneumonia. Early consideration of this treatable infection is crucial for patient outcomes.
Area of Science:
- Medicine
- Infectious Diseases
- Pulmonology
Background:
- Long-term oral corticosteroid therapy is a known risk factor for opportunistic infections.
- Nocardiosis is an uncommon bacterial infection that can affect the lungs, skin, and central nervous system.
Observation:
- A patient on long-term oral steroids for asthma developed progressive pneumonia.
- The pneumonia was refractory to standard antibiotic treatment.
Findings:
- The patient was diagnosed with pulmonary nocardiosis, a serious lung infection caused by Nocardia bacteria.
- Pulmonary nocardiosis is often misdiagnosed and associated with high mortality rates.
Implications:
- This case highlights the importance of considering nocardiosis in the differential diagnosis of pneumonia, especially in immunocompromised patients.
- Prompt diagnosis and appropriate antibiotic therapy are essential for improving outcomes in pulmonary nocardiosis.
- Clinicians should maintain a high index of suspicion for nocardiosis in patients with risk factors and atypical pneumonia presentations.
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