There are many publications that suggest that autism spectrum disorders are caused by different neuron wiring compared to so called neuro-typical human. The nature of this differences is not well understood but it does not sound like something that can simply 'treated'
EDIT: good article how some people are able to function with autism (which may look like treatment but it is not) http://www.nytimes.com/2014/08/03/magazine/the-kids-who-beat...