Various causes of Asperger’s Disorder have been suspected and studied, yet none have been proven. As with diagnosis, Asperger’s Disorder has been combined with autism in the search for a cause.
Recently, vaccines have been under attack, with parents insisting their child was fine until he was vaccinated and almost immediately afterwards began to shown signs of autism. Research in the USA and various other countries investigated this theory and found no basis to support it. While studies have conclusively determined that the most suspicious agent, thimerosal, is not a cause of autism, the Federal Drug Administration (FDA) in the USA has nonetheless decreased the amount of this mercury-based preservative in vaccines. Studies looking into other vaccine agents are still being conducted.
Chemicals in the environment are also under investigation as a cause of a variety of childhood disorders, including ASD. To date there is no evidence that chemicals cause Asperger’s Disorder, ASD, or any childhood disorder.
Maternal factors such as use of prescription medications and conditions during pregnancy are also being investigated. Various medications used in early childhood are also being explored as potential causes. Despite all the research done to date, we still have no concrete answer for what causes Asperger’s Disorder.