Allergic rhinitis and asthma: epidemiology and common pathophysiology

Area of Science:

• Immunology
• Pulmonology
• Allergy

Background:

• Allergic rhinitis and asthma frequently coexist, termed united airway disease.
• Epidemiological data indicate rhinitis is a risk factor for asthma development.
• Patients with both conditions exhibit shared physiological and immunological characteristics.

Purpose of the Study:

• To review evidence supporting the united airway disease concept.
• To explore shared epidemiology and pathophysiology between allergic rhinitis and asthma.
• To discuss therapeutic strategies for managing these interconnected conditions.

Main Methods:

• Literature review of epidemiological studies.
• Analysis of shared pathophysiological mechanisms, including inflammation and hyperresponsiveness.
• Evaluation of pharmacotherapeutic and immunotherapeutic treatment outcomes.

Main Results:

• Strong epidemiological links and shared T-helper type 2 inflammation observed.
• Local airway inflammation may trigger systemic responses.
• Treating rhinitis improves asthma and vice versa; immunotherapy shows superior outcomes.

Conclusions:

• Allergic rhinitis and asthma are interconnected, supporting the united airway disease model.
• Understanding shared mechanisms is crucial for effective treatment.
• Integrated therapeutic approaches, particularly immunotherapy, are recommended for simultaneous management.