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Related Experiment Videos

Pseudo-steroid resistant asthma.

P S Thomas1, D M Geddes, P J Barnes

  • 1Department of Thoracic Medicine, National Heart and Lung Institute, Dovehouse Street, London SW3, UK.

Thorax
|March 27, 1999
PubMed
Summary
This summary is machine-generated.

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Many patients diagnosed with steroid-resistant asthma (SRA) may not have the condition. Identifying alternative diagnoses is crucial for effective management and avoiding unnecessary steroid treatments.

Area of Science:

  • Pulmonology
  • Allergy and Immunology
  • Critical Care Medicine

Background:

  • Steroid-resistant asthma (SRA) is a challenging subgroup of asthma patients requiring careful management.
  • This study reviews 14 cases presenting with apparent SRA to identify diagnostic challenges and alternative conditions.

Observation:

  • 11 out of 14 patients lacked substantial evidence for SRA beyond symptoms and wheezing.
  • Key differentiating factors for severe asthma included inability to perform reproducible forced expiratory maneuvers and normal airway resistance.

Findings:

  • Normal histamine provocative concentration (PC20) for a 20% fall in forced expiratory volume (FEV1) suggests non-asthma related symptoms.
  • Four patients were healthcare staff, and two reported childhood sexual abuse, highlighting potential contributing factors.

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Implications:

  • Accurate diagnosis is vital to avoid high-dose glucocorticosteroid and beta2 agonist treatments in non-SRA patients.
  • Consider alternative diagnoses like GERD, hyperventilation, vocal cord dysfunction, and sleep apnea for suspected pseudo-SRA.
  • Targeted treatment of underlying conditions can resolve symptoms and prevent unnecessary corticosteroid use.