Some types of Autism Spectrum Disorder are considered as 'idiopathic' or originating from an unknown cause. Though a lot of factors relates to autism such as genes, vaccines and parenting, they are just correlation which does not actually pinpoint a cause.
This FREE Application answers the following questions,
What Is Autism And Autism Spectrum Disorder?
What Are The Most Common Autism Spectrum Disorder Symptoms?
Treatment And Therapies For Autism Spectrum Disorder
What You Need To Know About Autism Spectrum Disorder - Faqs
Autism Spectrum Disorder (Asd) Diagnosis