I would like to know the age of your kid. Asthma
is a disease of airways that get narrowed with some exposure to allergens. it does require long term therapy. Treatment types and durations in asthma are decided by doctors on the basis of the frequency of symptoms in day or night over a month. The titration of drugs may be even learnt by parents as long as you are using inhalation therapy
with a device. Do write back if any further query.