A brain development disorder characterized the onset of by repetitive and limited behavior, impaired social interaction, and communication problems before a child reaches the age of three. There is no cure, and people with autism are generally unable to live independently during adulthood.
Example: The child was diagnosed with autism after her concerned parents described her repetitive hand flapping, rocking, and stacking of toys to the specialist.
Grinnell, R. (2008). Autism. Psych Central. Retrieved on May 23, 2015, from http://psychcentral.com/encyclopedia/2008/autism/