Viruses bacteria..
Several Toxic Agents...
Of the endothelial junctions and BBB breakdown.
Can be the cause..

http://www.autismcalciumchannelopathy.com/Blood_Brain_Barrier.html

To help treat...
Nimodipine and calcium overload..
Oh plus.. There is a warning here but what it is used to treat..

http://www.fda.gov/Drugs/DrugSafety/Post...s/ucm129297.htm

This is serious stuff!
It is all shocking indeed!
Could it be worse then this?

Toxic Agents...

http://www.autismcalciumchannelopathy.com/Toxins.html

Who wants any of this stuff put into ones body as none of it sounds good.
A very risky thing indeed!
Thats how it all looks to me.

Autoimmunity in this pathology??

http://www.ncbi.nlm.nih.gov/pubmed/7706428

endothelial cell degeneration.

http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2868893/

Neuro inflammation in the brains of patients with autism.

http://www.edtasuppositories.com/studies/autism/vargas.pdf

the bloodbrain barrier (BBB) endothelium..
Could it be??