from your symptoms I think it could be either echinoccocus (the multicularis one can get very very very long and creates cysts filled with candida and they hate vervain, it does not kill them but makes them angry, anyway, this one is absolutely nasty one) or trichinella spiralis
large amounts of Colloidal Silver (drinking every day about 1 liter of Colloidal Silver or taking the silver sheets) helped me the most with these two and guessing from reading about your symptoms you might have one of the above or both too