Somatic symptom disorders are a group of disorders, all of which fit the definition of physical symptoms similar to those observed in physical disease or injury for which there is no identifiable physical cause. As such, they are a diagnosis of exclusion.
Occupational therapists use special equipment to help children with developmental disabilities. Occupational therapists treat injured, ill, or disabled patients through the therapeutic use of everyday activities. They help these patients develop, recover, and improve the skills needed for daily living and working.
In addition to these medical professionals, there are many therapists who can take part in a multidisciplinary evaluation of your child. While these people are not medically trained, they may know as much or more about autism as a highly trained doctor -- simply because they spend so much time around autistic people.