My 11 year son has recently been diagnosed with asmtha as he has a severe night cough that he has had about two weeks with no let up. Doctor said that there was no chest infection, ear or sore throat. Doctor told him to use his blue inhaler whenever he felt the need, only problem is he is using it loads and it does not seem to be helping. Could the doctor have got it wrong and him just have a bad cough, cough medicine has not helped either. He is really bad at night and last night was bad as we had been to watch a firework display and had been out in the cold. Any advice would be greatly received!!