Final answer:
Asthma is the most common chronic disease of childhood, affecting a significant percentage of both children and adults in the United States. It is a respiratory condition that affects the lungs and is the leading cause of hospitalization in children.
Step-by-step explanation:
The most common chronic disease of childhood is asthma. Approximately 8.2 percent of adults and 9.4 percent of children in the United States suffer from asthma. It is a respiratory condition that affects the lungs and is the most frequent cause of hospitalization in children. Autism, cerebral palsy, and obesity are also chronic conditions but are not as prevalent as asthma in childhood.