What are Genetics & Certain medical conditions, such as Fragile X syndrome & Down syndrome?

    We do not know all of the causes of ASDs. However, we have learned that there are likely many causes for multiple types of ASDs.

    Most scientists agree that genes are one of the risk factors that can make a person more likely to develop an ASD. Children who have a sibling or parent with an ASD are at a higher risk of also having an ASD.

    In addition, ASDs tend to occur more often in people who have certain other medical conditions. About 10% of children with an ASD have an identifiable genetic disorder, such as Fragile X syndrome, tuberous sclerosis, Down syndrome and other chromosomal disorders.

    Poor parenting skills are not a cause of autism. As with any child, it is important to make sure the child is growing up in a safe and healthy environment.