my daughter had a cough for just over 3 months now and i took her to see he gp lots of time since. her chest is clear but the doctors dont know why shes had the cough for so long and told me its not unusual at her age to have a persistant cough and that it shoul get better by the time shes 18months old. should i be worried?
Reclothe problem here could be a gastric acid reflux condition, and she needs to be studied for that.  Gastric acid aspirated into the lungs can cause a chemical bronchitis and a persistent cough.  It can be treated with medications like Santa or Pepcid AC