Autism is a mental condition affects the way a person communicates,
and interacts with other people and the world around them.
Autism is caused by differences in the humain brain;
Some people with autism have a known difference, such as a genetic condition; Other causes are not yet known.
Scientists believe there are multiple causes of autism that act together to change the most common ways people develop. Scientists have much to learn about these causes and how they impact people with Autism.
Try to be patient and kind; It might be hard for people with autism to understand how to be a friend.