Why do I suddenly have arthiritis?

Both. Arthritis was actually one of my later symptoms. You can have infection in places that is below the symptomatic threshold and therefor only notice it when you herx. I have this frequently. Most of my cardiac symptoms and neuropathic pain has greatly reduced on it's own, but when treating it comes back out. On the other hand, i've also found that treating ineffectively can also lead to spread of the infection to new places that it never was before. For me this doesn't typically happen while i'm on treatment, but when i take it and then stop. Since you had it before it sounds like it may have just been nonsymptomatic but always present. Keep pushing forward, it will run out of places to hide I've also herxed symptoms i never had before. They're definite herxes though, come and go like the others

Psiloraptor said:
You can have infection in places that is below the symptomatic threshold and therefor only notice it when you herx. I have this frequently. Most of my cardiac symptoms and neuropathic pain has greatly reduced on it's own, but when treating it comes back out.

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I totally agree with him!!

The lyme bacteria, bartonella, many stealth microbes colonize your body slowly, but surely, if your immune system is down...

You only get symptoms in worse areas, not everywhere.

It's usually an illusion to say 'I only have arhtritis on one knee' for example. As in your case, andrographis and knotweed are VERY STRONG, and go very deep in the tissues, so, they are going after those Bb or whatever they are targeting deep in your joints.

that is how I usually know which kind of pathogen is colonizing where: by taking certain herbs and watching my body's reaction.

I do energy testing, so that also helps me find what's going on. Many people react like you, when they take the exact treatment they need. Buhner's herbs are very systemic, and multi function, so they will sometimes go after places that even drugs won't go.

the joints, in my experience, are places we can keep junk. A lot of junk like toxins, heavy metals, then thats' where infection will come because circulation is not as good....

With the age, you realize so many people have joint problems.