Dear Mr/Mrs Pandey,
It is difficult to diagnose asthma
in little children as pulmonary function tests are difficult to perform by children and therefore the diagnosis is usually retrospective based on response to treatment.
Chronic noctunal (night time) cough
, audible wheeze after playing or exertion are symptoms suggestive of asthma and inhaled salbutamol
can be tried to see the response.
Occasionally asthma is triggered by viral infections, so a temporary use of inhaled bronchodilators is a good treatment. Children may develop asthma after repeated viral infections and more so if they have allergies, like food allergy
for example. And also, children may not develop asthma but a temporary relief with inhalers will provide comfort to the child in lowering lung inflammation and constriction.