What is an exacerbation?

An exacerbation, or asthma attack, is when there’s an increase in more typical asthma symptoms such as coughing, wheezing or tightening of the chest alongside a decrease in breathing capacity. Some exacerbations can happen slowly over time, and others may develop quickly. When an exacerbation is serious, a rescue inhaler may not be sufficient, and one may use an oral steroid or visit an emergency department.