It is not a mental health condition — autism stems from developmental differences in a person's brain structure and neurotransmitters ... include trouble making eye contact, and difficulty ...

Early signs of autism include avoiding eye contact, not showing interest ... and prize routine and structure. They may be passionate about a particular topic, such as math, and discuss or practice ...

According to autismspeaks.org, 1 in 45 adults in the U.S. are diagnosed with autism spectrum disorder. As explained by autism speaks, autism in adults could be challenged with social communication ...