I know somone who has a son suffering from it.

A shortened description of his symptoms is that he is intelligent, makes these autistic like movements, cannot handle any changes in his environment or activities and he seems to live in his own world. Everything has to be familiar and routine or he goes bananas.

She says it is because of a buildup of toxic metals and such in his blood that his body is unable to eliminate.

She feeds him a special organic diet, no additives, gluten or dairy products etc. etc.

The most effective thing I have seen is to give him a bath in Epsom salts. It makes him almost normal for several hours. Seems the Epsom salt draws bad things out of his body.