Autism is a developmental disorder. It is identified by the problems associated with social interaction, and restricted and repetitive behavior. These signs can generally be detected in the first two or three years of a child's life. Some of the common characteristics of autistic children are avoidance of eye contact and turn-taking, preference of loneliness, and difficulty in maintaining friendships. Echolalia and use of reverse pronouns are commonly witnessed in an autistic child. Rubella, alcohol, pesticides, cocaine, air pollution and valproic acid are some common risk factors during pregnancy, which may cause autism in the unborn child. Different approaches, evaluations, methodologies and advanced studies on autism have been included in this book. It brings forth some of the most innovative concepts and elucidates the unexplored aspects of autism. Students, doctors, and experts actively engaged in this field will find this book full of crucial and unexplored concepts.