Call your doctor whenever you or your child has persistent:
Some children with asthma may not complain specifically of shortness of breath. However, they may flare their nostrils or use their chest and neck muscles when breathing. These are signs that they are having trouble.
If you already have been diagnosed with asthma, call your doctor if your symptoms:
Are getting worse
Are not being controlled by your regular medications
For example, call your doctor if you must use your rescue bronchodilator more than four times a day. Also call if your peak-flow-meter readings are in the yellow or red zones.
If you have an asthma attack and your symptoms persist despite your usual medications, seek emergency help immediately.