You haven't mentioned the age of your son. Upto the age of 3 to 5 years it is difficult to differentiate between wheezy bronchitis
of childhood (viral) from bronchial asthma
. Your son should respond to the treatment given , however the inhaler may need to be continued for a long duration if your son is getting repeated episodes of such symptoms. Also a Serum IgE level should help in the diagnostic process. Recurrent viral infections are common in winter season and subside with their own course.However it is advisable that you consult a pediatrician
/ pulmonologist for the same so that the diagnosis is reached at.
Dr. Gyanshankar Mishra
MBBS MD DNB