Yes. Asthma is a chronic (long-term) disease that causes inflammation and narrowing of the airways. Some degree of inflammation is usually present, even at times when you are unaware of any symptoms.
If your asthma is untreated, you will have repeated attacks of asthma symptoms.
Some mild attacks may settle down without treatment, but treatment usually helps them to resolve more quickly. If you experience a serious attack you should seek emergency help.
Your asthma does not stay the same, but changes over time. Every person who has asthma will have both good and bad days, or even weeks or months. However, if asthma is properly treated it is possible to enjoy long periods of time without symptoms or attacks.
Finally, while asthma is a chronic disease s; some children may grow out of the condition as they get older.