In which age group is acute bronchiolitis most commonly seen?

Acute bronchiolitis is most commonly seen in infants and young children, particularly in those under 6 months of age. This age group is particularly susceptible due to their immature immune systems and smaller airways, which can easily become obstructed during respiratory infections. The condition is typically caused by viral infections, with respiratory syncytial virus (RSV) being the most common culprit.

Infants in this age range often present with symptoms such as wheezing, cough, and difficulty breathing, which can be alarming for caregivers. As children grow older, their airways become larger, and their immune systems develop further, which results in a decreased incidence of bronchiolitis in older age groups. Therefore, understanding that acute bronchiolitis predominantly affects those under 6 months is crucial for identifying and managing the condition effectively in pediatric practice.