As early as infancy a child can start showing the three major signs:
Communication Challenges, Repetitive Behavior, and Impaired Social Interactions.
This disease is growing at 14 percent a year, and 20 percent in china. The spectrum disorder is more common than childhood diabetes, cancer, and AIDS combined. Approximately there are 67 million affected people in the world. Unfortunately there is no test for diagnosis, it relies on behavior screening.
For more information on Autism visit http://nhsofarizona.com/health-challenges/autism