Wheezing is a whistling sound that happens when a person is trying to breathe out, but the airways in the lungs are partly blocked.
Go to the emergency department at a hospital right away if your child has wheezing and any of these warning signs:
Call the doctor if your child has wheezing and problems eating or drinking, but none of the warning signs.
The first time your child has wheezing, doctors may do one or more tests:
If doctors are sure your child's wheezing is caused by asthma, they don't usually do tests each time your child has some wheezing.
If the wheezing keeps coming back and isn't helped by asthma medicines, doctors may do other tests:
Doctors may have your child use an inhaler to breathe in medicines that open the breathing passages. These are the same medicines used for asthma, but they also work for wheezing that isn't caused by asthma. If your child’s wheezing is severe, doctors may also give corticosteroids through an IV or by mouth.