Hi Joey, sorry for what you're going through..

I know it's most likely to do with mercury, or other toxins, but be aware as someone suggested, candida can cause or contribute to these odd and distressing reactions.

I would (if you're not already) make sure you stop eating sugar, gluten (wheat etc), yeast. If you have candida and it's causing this? You'll continue to suffer needlessly. If you decide to eliminate the things that feed it, you may find you improve once the candida has been starved out more. Also be aware of fruit and milk (natural sugars) and lessen or elminate these. Potatoes can too with their high starch. But certainly the obvious sugar and yeast and gluten are the main culprits.

Again, you may alredy be doing this, but correcting these things in the course of mercury detox, may make you feel or cope a lot better and find the allergic reactions lessen or even abate.

Not to give you false hope, but it woudl be worth doing. If you haven't done this before, you may find you feel worse for a while as the yeast inside you is dying from lack of food source. It might make you crave the very things it needs to survive, and you may feel headachey, or even a bit drunk or dizzy as they are dying, but just be aware that it's a pretty good sign that your body is eliminating excess candida, which should mean improvement later on.