A number of ailments can cause lung issues, but commonly it is an infection. Yes, you should be concerned. Not being able to breathe can be lethal to a baby. Asthma is considered an emergency- i cannot believe your doctors are taking SOO long to deal with this issue. 6 months?!!!!!! Malpractice in my opinion.
Coughing of that kind of nature, where the child is gasping for breath after a coughing jag, is a classic sign of pertussis or whooping cough, just one type of infection. This disease is bacterial in nature, and unless it is swabbed for in the first few weeks on contracting it, it is usually not found, and untreatable past that point. However it can take 6 months or longer to finally get your lungs back to normal. Mine took a year. MOST doctors never test or suspect whooping cough because it was wiped out for many years. BUT, come to find out the vaccine only lasts 10 years, so high school kids are contracting it now and it goes through the school like wildfire. It spreads through entire communities. Most people just think they have a really bad cold. Again many times it is called asthma or a common virus by the doctors. I took eccinacea (an immune system booster)and it made a big difference in my lung function But I dont know the safety of it with infants.
Pnemonia is another infection. RSV. TB. And then there is CF,. Celiacs, and don't overlook heart failure or heart disease.
Sage is a potent broad spectrum antibiotic, an immune stimulant, and an expectorant. Samento is an antibacterial liquid that can treat L form and mycobacteria. But again, I dont know the safety of these with infants. A hollistic doctor is probably your best shot at getting the illness diagnosed and treated. It will cost you some money, but at least they take it seriously. Standard MD's screw around for years, and just kind of shrug their shoulders.
Choline deficiency can cause respiratory distress in infants.
Magnesium deficiency can cause asthma and copd. recurrent mucosal infections are a sign that magnesium is needed. Sometimes milk can cause low magnesium /high calcium which can cause the Mg deficiency.
Low vit A can cause mucosal infections .Magnesium is something i would definitely try, it is safe, and it is also needed for normal heart rythm, so it can help with heart problems too. It is HIGHLY recommended for asthma /COPD. There is a product called babycalm on line that is dosed for infants. there is also magnesium oil, which can be rubbed on skin and it absorbs that way.
Fulvic acid is safe and has 60+ trace minerals, which can support the immune system. it is a tasteless liquid, you can get it online or at health stores. It is said to rebuild the immune system, activates white blood cells, fights yeast and bacteria, controls inflammations and restores thymus, and it is the most powerful free radical scavenger known.
I would also consider a T of raw virgin coconut oil for the essensial fatty acids. It also has lauric and myristic acid which treat viral infection. coconut oil is put in baby formula..
one other thing, if they have you giving vit D or iron supplements i would seriously consider stopping them. Iron literally FEEDS bacteria. So if there is a lung infection iron supps can make the bacterial colony grow.
Vit D supps contribute to low magnesium/hi calcium.
ALWAYS follow your mama gut. it is right.