The ammonia from the parasites, and the liver not being to process it into urea, causes more problems than the parasites themselves. Neurotoxins--they cross the blood/brain barrier. Do a search for "neurotoxins" and see what comes up.
>>>When there is decreased blood flow through the liver, there can be increased levels of ammonia in the blood.
This is the beginning of it:
>>>Detoxification can be an important method to support the patient during their healing crisis. As with many autoimmune cases, there are many factors. Neurotoxin overload is a common problem that affects many patients. The source of neurotoxins may be heavy metals, viruses, bacteria (in the case of Lyme), fungi, molds, parasites and protozoans. Some of the toxins actually target, impair and even damage the nervous system and the detoxification organs. This can further impair and block the route for normal excretion, causing an accumulation of toxins. This results in intracellular damage and further progression of disease.