As someone who only works with children who have autism, my heart goes out to the parents of children who have autism. The most jaw-dropping thing I have recently learned is that there are many things that mimic autism! Equally as jaw dropping as that is, doctors do not routinely test for these to rule them out! The literature says autistic symptoms are reversed when sources such as calcium propionate, free glutamate, t, gondii, ochratoxin A, NCGS/NCWS, lead, VOC's, Lyme disease, mercury, cadmium, aspergillus, aluminum, pesticide... overloads are ameliorated, usually by oral DMSA. A scary thought that testing may show one of these is the cause of my child's autism symptoms, or it may not.