When and how were they diagnosed? My ds is almost 3 and has just come out of hospital after going in with a wheeze which started as a cold. This is the fourth time he has been admitted with a wheeze and I find myself getting scared every time he has a cold now. This is complicated by the fact he has a heart condition which is triggered by illness. They say he's too young to diagnose asthma so wondering when or how it will be diagnosed. He is always given a nebuliser and salbutamol inhaler while he is there and to take home although this also triggers heart problems so we have to be careful with it.