Your little son's cough does not sound like an allergy. It only started about a month ago and if he was allergic he probably would have shown some symptoms earlier.His cough may have started off with an infection probably a viral infection causing an illness such as bronchiolitis.Another possibility is that he has whooping cough as there is a lot of this illness going around this year.I do suspect whooping cough as your son has not responded to any of the treatments so far.The cough of whooping cough can continue for as long as 3 months and is worse at night. You can ask your doctor to prescribe Aterax syrup 2.5ml at night for about 14 days to see if this helps to reduce your son's coughing.
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