Autism spectrum disorders (ASD) are characterized by social-interaction difficulties, communication challenges and a tendency to engage in repetitive behaviors. However, symptoms and their severity vary widely across these three core areas.
What is the earliest age for autism diagnosis?
As for autism, studies demonstrate that behavioral signs can begin to emerge as early as 6 to 12 months. However, most professionals who specialize in diagnosing the disorder won’t attempt to make a definite diagnosis until 18 months.
What is the cause of ADD?
Causes of ADHD. Because attention deficit hyperactivity disorder (ADHD) symptoms—inattention, impulsivity, and/or hyperactivity—affect a child’s ability to learn and get along with others, some people think an ADHD child’s behavior is caused by a lack of discipline, a chaotic family life, or even too much TV.