This is an infection in the smallest passageways of the lungs. It causes the passageways to swell and fill with mucus. Bronchiolitis is most common in children under the age of two. Some children only have mild symptoms. But it can be serious.


Bronchiolitis is usually caused by a virus. It spreads to your child through close contact with an infected person. It spreads by tiny droplets released in coughs and sneezes. We often see these infections in the fall and winter.


Symptoms can include coughing, wheezing and shortness of breath. Your child may have a fever, and they may be fatigued. If your child is not getting enough oxygen, their skin may turn a bluish color. This is a medical emergency. Call your doctor.


Treatment options include fluids, saline nose drops and rest. A humidifier can help loosen mucus. If your child's symptoms are severe, they may need to be hospitalized. Your doctor will create a care plan that's right for you.