I think that the role of psychotherapy to them is close to rehabilitation rather than the treatment. And it also possible to see the effect of rehabilitation to them in conversation.
I think that if the cases of autism, the appropriate intelligence test for them, a more detailed categorization is possible.
In addition, they also suffering from mental anguish various. (Late of disease and failure) It is also a place to express out the their mind.
Stem cell trial is performed in very limited state until now but there should be some concern on the treatment of Autism and Cerebral palsy by Stem cell.
Although I had only a few treatments on Autism, I had some improvement of the symptom of patients cmpared to pre-treeatment state.
So, psychotherapist should get some interests on the psychotherapy combined with Stem cell therapy.
I think, it would valid in the developed countries for understanding of autism patients ( children ). However, there are many countries focuses on support them, rather than the active involvement of their ability and treatment. There is a difference in the level of medical knowledge. In my country, not be in the level to interpreted as a resource to their symptoms yet. These problems will be an important issue in the future.
I can answer considerening cerebral palsy. A psychologist can have an important role near children and adults with CP as well as near their families and teachers and community.