Refractory asthma coexisting with a double aortic arch: a case report and literature review.

Asthma that is poorly controlled despite adequate treatment should be investigated for medication compliance, treatment adherence, environmental control, asthma mimics, and comorbidities especially in infants and young children. Here, the case of a 2-year-old child with refractory asthma coexisting with a double aortic arch is reported.