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Asthma is a chronic respiratory ailment that requires careful management due to its varying symptoms and influencing factors. It is characterized by airway inflammation, bronchial hyperresponsiveness, and reversible airflow obstruction, leading to symptoms like wheezing, shortness of breath, chest tightness, and coughing. The symptom frequency and intensity may vary considerably over time. It is also linked to immune system responses to allergens and irritants, highlighting the complex...

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Work-exacerbated asthma in a workers' compensation population.

T Lim¹, G M Liss, L Vernich

¹Department of Medicine, University of Toronto, Toronto, Ontario, Canada M5T 2S8.

Occupational Medicine (Oxford, England)

|February 22, 2014

Summary

Work-exacerbated asthma (WEA) affects many workers, with exposure types and lost workdays varying significantly across industries like healthcare and education. Understanding these differences is key to managing occupational asthma.

Keywords:

Asthma education health care industry occupational service work-exacerbated asthma.

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Area of Science:

Occupational Medicine
Pulmonology
Epidemiology

Background:

Work-exacerbated asthma (WEA) is a growing occupational health concern.
A significant portion of the workforce experiences asthma symptoms triggered or worsened by workplace exposures.

Purpose of the Study:

To characterize workplace exposures and analyze working days lost in relation to WEA within a workers' compensation population.
To identify patterns of WEA across different industry sectors.

Main Methods:

Analysis of accepted workers' compensation asthma claims in Ontario over five years.
Categorization of claims by industry group (services, education, healthcare) and duration of work absence.
Classification of attributable agents into dusts, smoke, chemicals, and sensitizers.

Main Results:

72% of asthma claims met WEA criteria.
Education sector showed higher dust exposure (65%) and fewer short exacerbations (27%).
Healthcare sector had more short exacerbations (55%) attributed to sensitizers (41%).

Conclusions:

The specific agents causing WEA and the resulting worker morbidity differ substantially between industry groups.
Findings highlight the need for industry-specific prevention and management strategies for occupational asthma.