Although you say you've been tested for allergies there's no way anyone can be tested for all allergies much less for the effects of a combination of things which could also be the cause of an allergic reaction.
The burning feeling in your mouth & tongue plus the sore tongue go together to suggest a food, or air spray or anything you might breathe in through your mouth (are you a person who breathes through your mouth at night?). The running nose & sneezing also suggest hayfever, allergy even sinus or any combination. It's a combination which I would suggest might be the problem. When did this start? Did anything change about that time? Also it could be worth considering an emotional trigger, that doesn't make you nuts, just human & emotions can cause some pretty awful affects on our body!!
As to the facial sweats, well the rest is all to do with the face (mouth, tongue, nose) so I still come down on the side of some allergy.
Try antihistamines (strong ones & if you can you might try taking a break away from home for a couple of weeks & see if that helps, but also change your washing powder, talc, perfumes etc. If the break away provides an improvement then you have some sort of answer, if not then I guess it's back to the drawing board.
Good luck.