If your child has had a history of Autism-related problems in life, what is it like for his/her mental health?

If you're child has had a history of Autism-related emotional issues / behavior problems, what is it like for him or her? Does he or she have a specific phobia, anxiety disorders, uncontrolled emotional problems, repetitive abnormalities in the way he or she acts, rituals and routines, differences in education, misunderstandings, distractions, etc.? What is it like for him / her as an adult? Tell me what you know!