Asperger’s Syndrome is difficult to diagnose and many children have been misdiagnosed before receiving the diagnosis of Asperger’s syndrome.

A specialist in psychosocial evaluation usually performs an evaluation. A history of symptoms is usually taken, and the child’s development of motor skills and language skills as well as personality and behavior patterns are observed. The child’s social development is assessed as well as communication skills and social interaction.

You can read more at the Cause of Aspergers Syndrome web site

Individuals diagnosed with Asperger’s Syndrome demonstrate no evidence of brain lesion or any other biological factor of autism. Furthermore, typically individuals with autism commonly have associated medical conditions such as fragile-X syndrome, tuberous sclerosis, neurofibromatosis, and hypothyroidism which are less common in those who have been diagnosed with AS. In fact a very small number of cases of AS have been associated with any type of structural brain abnormality. One study conducted by Dr. R. Kaan Ozbayrak, found left parietooccipital hypoperfusion in those with Asperger’s Syndrome. Larger studies are needed in this area of research in order to evaluate brain imaging techniques in association with AS.