Going down hill fast.

My son is going down hill fast, he cant eat carbs at all and he is under weight. I am actually fearing for his health now. Even the best children's hospital in the world cant treat him. I am very worried for him. When he eats he becomes ill. His symptoms are sinus problems, cold hands and feet, stomach problems, gut problems, constipation, altered mental state. When he eats carbs he becomes so ill, even with very small amounts. I think it is some sort of bacterial dysbosis. I tried a quarter of a Garlic capsule but it just seemed to feed it. I have never felt desperation in my life before like this. I am taking him back to the doctors tomorrow to see if I can get him something to help but the normal guy that treats him has been on holiday for six weeks and not back till next week, I have sent an urgent email and am waiting to hear back. I have explored to the ends of the earth to get him help especially these last few weeks. I wont give up but am really worried. He is on fluconazole but it is not touching this other problem that has developed after taking trimethoprim antibacterial. I just can't understand why carbs are making him so ill. The only small amounts of carbs he is getting is from veg and a little grated coconut but it is very minimal and as the day progresses he gets worse after each meal. Tweet