You're right, my vibe also tells me that this is more than asthma. I've read about a certain immunodefficiency that children are born with. I believe it reverses as the child gets older, and there is treatment for it!! The treatment will involve replacement of the deficient immune component. Pretty simple!! The doctors can look for this deficiency with a simple blood test! I hope that you'll bring this up with your son's doctor, it'll be well worth it!
I'm not a doctor, but I just wanted you to know what I've read!! I wish I could think of the exact name of the immune defficiency, but I can't!! ={
Hope this helps out!!
It is not clear to me, from your description, if your son has had recurrent pneumothorax or mucus plug related atelectasis. If pneumothorax that might be due to “blebs” on the surface of his lungs. If atelectasis, the question is what type of underlying lung disease, if not cystic fibrosis (CF), would predispose him to repeated infections. Might he have an asthma-associated condition called allergic bronchopulmonary mycosis (ABPM) that is characterized by the formation of mucus plugs? Asthma alone would not be responsible for these problems. It may be time to seek consultation with a pediatric pulmonary specialist, also known as a pulmonologist, to look to more uncommon congenital lung diseases, including tracheobronchomalacia and alpha-1 antitrypsin deficiency. And, yet another condition that could account for repeated infections would be some type of acquired immunodeficiency state.
At age 7, with his long history of respiratory problems, it is time to thoroughly investigate what might be going on. The specialist consultation along with a CT scan of your son’s lungs could be helpful in sorting-out the various possibilities.
Good luck.