Problems Teens with Autism Spectrum Disorder Syndrome Often Face. Diane Kennedy, in her 2002 book The ADHD Autism Connection, writes the years from twelve to seventeen are “the saddest and most difficult time” for people with Autism Spectrum Disorder (ASD).Of course, this is not true of every teen as some do extremely well, typically dependent on the level of acuity on the autism scale as. May 16, 2018 · What Are The Signs of Asperger’s in Teens? Posted on May 16, 2018 by SDCAadmin. According to the CDC, autism affects one in 59 children. Many children receive a diagnosis when they’re young, but you may not notice unusual behavior or question if your child has Asperger’s syndrome until your child becomes a teenager.