Severe asthma: epidemiology, pathophysiology and treatment

Area of Science:

• Pulmonology
• Clinical Medicine
• Pathology

Background:

• Severe asthma is a complex respiratory condition that is not well understood.
• Unlike milder forms, severe asthma often resists standard medical treatments.
• Disease onset can occur in childhood or develop in adulthood, indicating diverse etiologies.

Purpose of the Study:

• To explore the clinical, physiological, and pathological characteristics of severe asthma.
• To identify potential genetic and environmental factors contributing to severe asthma development.
• To highlight the challenges in treating severe asthma due to its complex nature.

Main Methods:

• The study reviews existing clinical data, physiological measurements, and pathological findings in severe asthma patients.
• It examines the heterogeneity of disease presentation and progression.
• Focuses on identifying key differences between mild and severe asthma phenotypes.

Main Results:

• Severe asthma exhibits significant heterogeneity in pathology, including persistent eosinophilic inflammation and structural changes.
• Physiological findings often include air trapping and loss of elastic recoil.
• Two distinct patient groups may exist: those with lifelong severe disease and those developing it in adulthood.

Conclusions:

• A deeper understanding of severe asthma's underlying mechanisms is crucial for developing effective treatments.
• The varied pathology and potential for adult-onset disease necessitate personalized treatment strategies.
• Current treatments are often insufficient, underscoring the need for further research into severe asthma.