Intestinal viral infection -> causes systematic spread to: Heart viral infection ->
Lack of circulation -> chest and other organs -> brain flow circulation ->
Symptoms of: ASD, Autism, CFS, Epilepsy, ADHD, Aspergers, Sleep disorders,
Mental disorders, Sensory dysfunction, inability to detoxify, digestive disorders...

I was suggesting these all have the same cause so I just did a search on Google.
Keywords - viral heart circulation and it came up with many possiblities.
Eg: http://www.escardio.org/knowledge/cardiology_practice/ejournal_vol1/Vol1_no11.htm
I also notice that one of the parents of each ASD children I know has a heart,
circulation or intestinal type condition. However it is not always blatantly apparent.
Virals are also transported genetically from parent to child to pet etc.
The timing of the viral attack to the organs involved determines the severity of their ASD.
I suspect that epilepsy is the bodies attempt to clear or maintain circulation to the brain.
My recent epileptic tremors actually make me function better.
I've had them all my life but never knew it till now.
Mind you there are virals and virals, trillions of types,
plus mutations and adaptations which are very busy continually replicating.
Perhaps virals is too general a term;
Perhaps there are several types mentioned in the quoted publication:
http://3service.freeservers.com/autism.html
Neil :-)