While since the year dot, I have been asthmatic, it hasn't bothered me too much in adulthood, but about 10 years ago i had a cough, i coughed and coughed, the docs gave me antibiotics which improved it for about two weeks, then i'd start coughing again. I kept asking to be referred to the respiratory clinic, but kept being told I needed a test, but couldn't have it because I was on antibiotics, this went on for 5 years, I'd been for a very strained weekend in Glasgow, not a place if you can't breathe. When I cam back I went straight to the surgery and said I wasn't leaving until I had an appointment for the respiratory clinic. The doc looked up and asked if I wanted to go to the hospital then or in a fortnight. I went then, and was kept in for a week where they discovered i had non infectious TB - I now suffer from Bronchiectasis. Whether you get your doc to refer your son, or take him to A & E, before he has permanent damage to his lungs.