I have never heard of your condition, being salicylate intolerant, so I had to look it up.
We know you have worms from your pictures. It's very possible that you have such a heavy infection that the worms are causing many of your problems. I have never been as bad as you, but that is because I found mine and starting fighting them early on, before years of damage could take place.
Just to throw it out there, is it possible that your reaction to herbs is more the reaction inside your body to the herbs effect on the infestation you have? People get horrible reactions to the die-off/herxheimer effect of killing parasites. I'm not suggesting that you take anything that could really harm you, just wondering if the reactions you get could be due to killing worms, rather than from the herbs themselves.
I don't agree with this method unless all else fails, but maybe you should consider the pharma route to the parasites you have. You will never get better with the worms, and they will not just go away.