What is the most common type of allergen responsible for asthma?

The most common type of allergen responsible for asthma is commonly considered to be dust mites. Dust mites are microscopic organisms that thrive in household dust and are prevalent in most homes. They feed on dead skin cells and are often found in bedding, carpets, and upholstered furniture. When their waste products or bodies become airborne, they can trigger allergic reactions in sensitive individuals, contributing to asthma symptoms.

While pollen, animal dander, and mold spores can also exacerbate asthma symptoms, they are generally less ubiquitous in the environment compared to dust mites, making dust mites a more frequent trigger for many people with asthma. Understanding the role of dust mites can help individuals manage their environment to reduce asthma triggers effectively.