There was a girl here not too long ago who changed her diet like that and suddenly developed symptoms that resembled pinworms and she swore they were coming out of her nose. I immediately recognized them as mucus strands, which come out of every hole in your body when its inflammed. She later had a ear nose and throat specalist confirm is was mucus and her diet change was what led to her body freaking out. It's very common. You could be experiencing candida die off on a large scale... but as I was reading your symptoms, it screams heavy metals. I don't know much about that from personal experience.. only that I recently experienced something similar (feeling like the floor is moving and depth perception being off) after taking large doses of ALA supplements.. which chelate heavy metals. I had no idea! I also have no idea how toxic I am with metals so what I experienced I am only guessing was HM detox.
I have also felt similar feelings while on parasite meds. I still have no idea of it was medication side effects or detox from parasite and other organism die off. Subsequent med doses did not produce the same effects, so I'll never really know.
Are you supplementing at all with regular mintivitamins and minerals? You might want to do that and see if you feel better. Vitamin c in large doses is supposed to neutralize the toxins and pull them out so that helps. I also found relief with MSM supplements (organic sulfur) while detoxing.
Its hard to say what exactly you stirred up, but its important to help your body eliminate whatever it is and support your immune system.
parasites in the brain usually involve seizures, but anything is possible. Eliminating toxins should help you feel better. If you have symptoms of parasites or worms in your stool, then you need to come up with a plan to get rid of the worms.. whether you do an herbal or pharma treatment.
Weren't you the one who just posted in the parasite forum?
If so, those most definitely looked like roundworms. If they truly are, that explains why you're feeling so bad. If you can get a lab test, even better.... but be warned that sometimes labs don't always come up positive on the first test.