Cause

An asthma attack is a sudden worsening of one's asthma symptoms which is caused by the muscles surrounding the airways to tighten due to bronchospasm. 

One out of thirteen Americans deals with asthma in some form. Many of those cases may be connected to seasonal asthma. A type of allergy-induced asthma.

According to the NHLBI, the exact cause of asthma isn’t known.That being said, there are a couple theories about what causes asthma.