YES! Megan, thank-you. This helps in my research. There are indeed chemicals produced by the parasites [most internal pathogenic parasites]They will use neuro-agents to correct self-homeostasis. I think calcinurin is one of them and actylcholine. They also make prostglandins [a bio-active lipid that can act as a short-lived hormone] There are many complexities involved at genetic levels. I figure I might get a better picture in 3-5 more years of study-research. The reason we get those panic attacks is, they have just put an inhibitory protein somewhere in the nervous tissue. After something like this happens, make note of any new changes in your everyday condition--even a persistent itch, or something minor. It could also mean something has disappeared. The result will seem permanent. [this has been my experience]. Shroom