What is the definition of Asperger Syndrome?

By definition, people affected by Asperger Syndrome have a normal IQ and some may even display impressive knowledge on a favourite topic often sounding like "a little professor". Although someone with this condition might sound rude, odd, eccentric and clumsy at times, both physically and in social interactions, this is based mostly on the lack of tools and a difficulty in observing and understanding body language, facial expressions, feelings and even language in a social context. Often, you can observe an extremely literal understanding of language which may contribute to distress when the meaning of the message is lost or misunderstood. Routines, patterns, certain movements and a lack of empathy can also be noticed in a child or adult affected by Asperger Syndrome.