Autism Spectrum Disorder (ASD) is a complex neurological & developmental disorder characterized by impairments in social communication, as well as restricted, repetitive patterns of behavior, interests, or activities. These deficits are present in early childhood, and lead to clinically significant functional impairments.

Impaired social interaction and social communication (i.e., difficulty with back-and-forth conversation; reduced sharing of interests, emotions or affect; not able to initiate or respond to social interactions; poor verbal and social communication, limited gesturing such as pointing, showing, reaching or waving; limited eye contact or avoids eye contact, etc.).

Restricted or stereotyped patterns of behavior, interest and activities (i.e., lining up toys or flapping hands, insistence on sameness, extreme distress at small changes, difficulties with transitions from one activity to another, rigid thinking patterns, need to take same route or eat same type of food every day, strong attachment to or preoccupation with unusual objects, apparent indifference to pain/temperature, adverse response to specific sounds or textures, excessive smelling or touching of objects, visual fascination with lights or movement.