Diagnostic criteria for Autism:
CDC - Diagnostic Criteria, Autism Spectrum Disorders - NCBDDD
Diagnosis criteria for Schizophrenia:
(sorry, couldn't find one at the CDC)
Autism is not necessarily schizophrenia.
There are many different treatment options for autism and/or schizophrenia. However, we at the forum are not qualified to give medical or psychiatric advice. You will need to contact your doctor, psychiatrist or healthcare provider to discuss what options are best for you/the patient.