Here are some early warning signs that an infant may have autism. Your baby does not cuddle with you. He or she tends to arch their backs when they are picked up. They may not respond to your smile or make eye contact with you. He or she may not respond to their name or point to things that they are interested. During their first year of life, it usually too early to diagnosis if an infant has autism or not so you have to monitor them. If you detect the early warning sign its best that you notify your pediatrician as early as possible to get early treatment.