[Rare causes of bronchial asthma]

Area of Science:

• Pulmonology
• Allergy and Immunology
• Clinical Medicine

Context:

• Bronchial asthma encompasses various subtypes, including aspirin-exacerbated respiratory disease (AERD) and allergic bronchopulmonary aspergillosis (ABPA).
• Accurate diagnosis and differentiation are crucial for effective asthma management.
• Understanding immunopathogenesis aids in targeted therapeutic strategies.

Purpose:

• To provide a comprehensive overview of AERD and ABPA, including historical perspectives, incidence, and clinical presentations.
• To outline diagnostic criteria, differential diagnoses, and treatment modalities for these asthma subtypes.
• To discuss the role of specific challenges and diagnostic methods, such as aspirin challenge, sulfiting provocation tests, and invasive procedures.

Summary:

• Aspirin bronchial asthma (AERD) is discussed, noting that many patients tolerate acetaminophen, and over 90% of allergic bronchopulmonary aspergillosis (ABPA) cases are extrinsic asthma.
• Diagnostic criteria for ABPA are presented, alongside the information that 5-10% of asthmatics exhibit sulfite sensitivity.
• Etiologic differentiation is emphasized for targeted therapy, with invasive diagnostic methods like provocation, bronchoalveolar lavage (BAL), and biopsies recommended when necessary.

Impact:

• This review enhances understanding of complex asthma phenotypes, aiding clinicians in accurate diagnosis and personalized treatment plans.
• It highlights the importance of identifying specific triggers and subtypes of asthma for improved patient outcomes.
• The information supports the application of advanced diagnostic techniques for challenging cases, optimizing therapeutic interventions.