Everyone with asthma has their own personal set of triggers and symptoms. Using a written asthma action plan is the best way to keep a record of your individual treatment plan.
You can have a certain ‘type’ of asthma too. For example, occupational asthma is caused by triggers in your workplace. Around 4% of people with asthma have a type of asthma called severe asthma, which needs specialist treatment because the usual medicines don’t keep symptoms under control.
The above information is from the Asthma UK website