My 5 year old son has not been well since last November. We have been back and forth to the doctor and the only response I get is it is a viral infection. His breathing is very wheezy and he has a constant chesty cough, however my doctor says his chest is clear?? He has had several colds in this period and numerous days off school. I again went to see the doctor who said it may be asthma but cannot be diagnosed until he is either 7 or has had 6 viral infections in a year?? I am convinced he may have a mild form of asthma as my mum, brother and sister all have it. Can anybody please give me some advice as I am really worried that he needs treatment and isn't getting it.