Yes. Seasonal allergies can trigger asthma.

The Connection Between Seasonal Allergies and Asthma

The reason why seasonal allergies can lead to an asthma attack is because these two conditions are characterized by inflammations in the air passages of the body and sometimes both conditions result from the same allergens causing such inflammations. This theory behind this is called the "One Airway, One Disease" concept.

According to Dr. Clifford W. Bassett's article "How Pollen Counts Affect Allergies and Asthma", published by the American Academy of Allergy, Asthma, and Immunology, the onset of allergies, whether seasonal or not, trigger asthma attacks. Thus, learning how to control and prevent the onset of allergy attacks is very valuable for asthma sufferers.

The common sources of allergies are pollen and mold. Pollen grains travel through air from trees, grass and weed pollens. They trigger allergy symptoms such as sneezing, watery eyes and wheezing. Meanwhile, mold spores are also airborne allergens which are essentially microscopic fungi.

In order to avoid allergy attacks that can very well lead to asthma attacks for asthma sufferers, it is highly recommended that asthma sufferers stay indoors during seasons when pollen is abound, and to prevent their homes and offices from being contaminated with allergens.

The Statistics

Studies show that individuals who have seasonal allergies have three times more likely a chance to develop asthma. 

In relation to this, seventy-five percent of people who have asthma also have seasonal allergies and seventy-percent of asthma sufferers have felt that the onset of seasonal allergies have aggravated their asthma symptoms.

As a result of this, sixty-eight percent of asthma sufferers are unable to engage in active sports during the allergy season, and worse, forty-four percent cannot take part in socializing or social activities.

Studies also show that allergy symptoms are often experienced during the warmer months, most especially during the springtime, where statistics show that tens of millions of individuals are affected with allergy attacks that can lead to asthma attacks as well.