
Hi Honeybee,
At the end of the the day you do need to go with what your GP has said I guess, but there are other things to consider if you want to.
Coughing is caused by many things and in Asthma it is created by the body's over reaction to an allergen (pollen, dust etc) and therefore causing a tightening of the alveoli in the lungs. When the the alveoli tighten it stops oxygen from passing from the air in the lungs to the rest of the body (including the lungs) causing the body to react = coughing, pins ands needles, blue tinge to the lips etc. These are signs of cyanosis (not enough oxygen in the body). So really it's a little like dominos in the body. One thing leads to another, resulting in your Son's coughing.
Now what the inhaler does is chemically force the alveoli open in the lungs allowing oxygen in and therefore reversing the efffects (putting all the dominos back up and again) to relieve the cough.
This is why I mention diet. Like I said, in kids 'Asthma'
usually starts or comes from the digestive system/stomach and therefore can be an allergen, but this time an allergen to some kind of food stuff. And I'm sorry to tell you, but this is quite often dairy!!
So yes you could say that your Son has Asthma... but created by what? There is always an underlying root cause of every illness and I would just ask the GP to find out what that is. Ask for him to have full allergen testing done. Not only food stuff (can be pork, fish, dairy, wheat... all manner of things) but also the usual pollen dust mites etc.
Also one more thing to consider is Hayfever. Quite often kids gets Hayfever and therefore get Hayfever related Asthma. Agan it's the body's over reaction to the allergen creating too much histamine. Therefore anti-histamine calms the body down and therefore calms the whole thing down.
Rather than having his childhood on potentially unecessary inhalers (especially steroid inhalers) it may be worth finding the cause and then you may be able to remove it. Therefore no need for inhalers.
Well this is all just info and at the end of the day you have to do what you feel is right for your Son and his wellbeing.
I hope your Son is OK and good luck everything. Do be pushy with those GP types though as they do, on ocassion, fob you off with medicine!