What infuriates me, is the people who believe the bogus "study" that claims vaccines cause autism. I live with autism every day, and no one has any business telling me where I got autism from, aside from legitimate neuroscientists and neurologists who have studied autism first-hand. It is passed to our children through genetics. The cause of autism spectrum disorders is an enlarged amygdala (the amygdala continues to grow past the age when it should have stopped growing), and some abnormalities in the frontal lobe. Think of it like this: The amygdala is the emotional epicenter of the human brain. So an enlarged amygdala will produce more emotions. The amygdala also sits up against the sensory and motor cortexes, so that sensory experiences and motor experiences can be associated with emotion. In my case, I get an "emotional high" from painting with oils and watercolors. I also cannot be touched by other people, because the sensation is either painful, or feels like I have bugs crawling on me.