Allergic respiratory disease: Different allergens, different symptoms

Area of Science:

• Allergy and Immunology
• Epidemiology
• Clinical Medicine

Background:

• Allergen sensitization patterns vary geographically despite Spain's population homogeneity.
• This study investigates the impact of regional allergen sensitization on allergic rhinitis and asthma in adults.

Purpose of the Study:

• To assess if different allergen sensitizations in diverse Spanish regions influence clinical presentation and quality of life in new-onset rhinitis and/or asthma.
• To explore the association between geographical allergen exposure and allergic disease characteristics.

Main Methods:

• Two sequential, multicenter, cross-sectional studies (PERFILAR I and II) involving 2711 patients.
• Utilized skin prick tests for allergen sensitization, ACQ-5 for asthma control, and ESPRINT-15/Mini-AQLQ for quality of life.
• Inclusion criteria required at least two years of residency in the geographical zone.

Main Results:

• Significant differences in allergen sensitization were observed between patients with rhinitis with or without asthma.
• Seasonal allergens linked to rhinitis, delayed asthma onset, and intermittent rhinitis.
• House dust mites (HDM) associated with more frequent rhinitis; Alternaria linked to asthma.
• Confirmed associations between geographical areas, prevalent allergens, and clinical allergic profiles.

Conclusions:

• Specific aeroallergens and sensitization profiles are linked to distinct allergic clinical pictures, symptoms, and severity.
• Findings suggest implications for predicting disease progression and guiding personalized management approaches.
• Regional allergen exposure plays a role in shaping allergic disease presentation and severity.