How can i tell if asperger syndrome is causing a person's social anxiety disorder?

Evaluation: The only way to really be sure is to have the person evaluated by a psychiatrist who has experience in this area.

Different criteria: Asperger syndrome have difficulties with social interaction, which can be accompanied by anxiety in around 50 %--but treating anxiety does not resolve the main features of Asperger syndrome---- good question.

Other Symptoms: Asperger's can certainly cause anxiety in social settings, but for a diagnosis of asperger's other symptoms are required related to difficulties in verbal communication along with other behavioral quirks and oddities.