Although there is no guarantee that symptoms will go away, they can usually be well controlled. Asthma should not be left untreated in the hope that your child will grow out of it. Appropriate treatment, on the advice of your doctor, and avoidance of triggers will help to control your child's symptoms. There is no evidence that moving house will improve your asthma symptoms. Many people associate asthma with bad air quality and presume that somewhere with better air quality will improve their asthma.
Pollution can be a trigger for some people but it is only one of many things that can affect asthma.
Asthma varies from one person to another. A place that agrees with one person may not be so good for another. Your own personal experience will give you clues as to what triggers your asthma. Some triggers will be found indoors, where we spend most of our time. House-dust mite, for example, is a common trigger which will be found wherever you live.