You may be able to tell when an attack is coming on by noticing changes in your child's breathing or behavior. Or you may detect a problem by using a peak flow meter. This simple device measures breathing so you can track how well your child is doing.

If your child is having an attack, stay calm. Then, follow these steps:

• Help your child rest.
• Use the reliever medicine that your doctor recommends.
• Call your doctor if the symptoms get worse or don't improve after about five to 10 minutes.
• If you cannot reach your doctor and your child's symptoms are severe, go to the emergency room.