Final answer:
Bronchiolitis is the inflammation of the bronchioles commonly in children under 2 years of age, often caused by RSV. Treatment primarily consists of supportive care since there are no specific antiviral therapies for RSV.
Step-by-step explanation:
The term for inflammation of the bronchioles that usually occurs in children younger than 2 years and is often caused by the respiratory syncytial virus (RSV) is called bronchiolitis. Unlike bronchitis, which is an inflammation of the bronchi and more common in adults, bronchiolitis affects the smaller airways, known as the bronchioles, that lead to the lungs. While acute bronchitis is treated with antibiotics, there are no specific antiviral therapies or vaccines available for bronchiolitis caused by RSV; however, most cases in infants resolve with supportive care, though severe cases might require hospitalization.