The particular symptom of Asperger syndrome is an obsessive interest of a child in a single object or topic to the exclusion of all others. The child with Asperger syndrome want to know everything on this one.
Sometimes, their modes of expression and vocabulary may resemble that of a little professor. Other symptoms of Asperger's include the inability to interact successfully with peers, the motor movements awkward and messy, repetitive routines or rituals, socially and emotionally inappropriate behavior, and last but not least, the problems with nonverbal communication.

