Like MS and Alzheimer's, sutism is caused by an inflated viral struture in the grain area, that shows up on ultrasound scans.
That is, ultrasound causes MHNF in the cells
This is just like cancer, and in 2002 the moffitt cancer centre showed that High Intensity UltraSound clears those cells – whil not affecting body cells.
The cheapest source is a 8W 1 Mhx ultrasound massage unit – medically licensed to be harmless to body cells.
So just ½ a minute 3 times to each sdie of the head clears autism totally, for ever. Every GP has a 8W 3Mhz unit - totally effective.