is caused due to broncho-constriction (obstruction of smaller airway passages) which is indicative of Hyper-responsiveness of air passages to an allergen.
Bronchodilators & steroids
will provide symptomatic relief by causing broncho-dilation (dilating the smaller airway passages, relieving the obstruction & increasing airflow to lungs)
preparation, can also be used as a maintenance therapy to relieve symptoms of seasonal allergies & asthma by reducing broncho-constriction.
So..the medicines given by the Doctor is correct...please continue them as advised.
And make sure that you are well protected from cold
, dust & other allergens.
Wishing a good health.
Thanks & take care.