Dr. Dixon was described as "a little off" by Bailey, Karev, and the Chief; however, she is autistic, having Asperger's syndrome, an autism spectrum disorder formerly considered separate from autism. ... Another characteristic of autism is specific and repetitive behaviors and interests.

Is Dr Dixon actually autistic?

Dixon, played by Mary McDonnell, who lives with high functioning Asperger's Syndrome. Not well received by the autistic community, Dr. Dixon's character was viewed as very stereotypical in some aspects and unrealistic in others.

Who is the cardiothoracic surgeon on GREY's anatomy?

Kim Raver (Dr. Teddy Altman, Seasons 6-8): The cardiothoracic surgeon, who came to Seattle Grace after working as an Army doctor in Iraq, eventually returned to the military, taking a job at the U.S. Army Medical Command. The character has since returned on a recurring basis.