The Plan can handle the fungal candida. What you're probably experiencing is more of an issue caused by hyper-permeability of the blood-brain barrier, or leaky brain - http://candidaplan.com/blog/1036/leaky-brain-or-blood-brain-barrier-hyperperm...
Since fungal candida promotes a lot of inflammation, it can be a major factor driving inflammation in the brain which can be upregulated 10-1000x that present in the body. Anything else that promotes inflammation will also play a role.
Taking antifungal drugs will also increase inflammation, as well as suppress the immune system. There are over 200 substances within candida that produce strong allergic reactions in our body.
Inflammation of the liver can affect brain function and physiology. Antifungal drugs cause liver inflammation.