Asperger's Syndrome is a high functioning form of autism. It is not an illness, and is in fact a developmental disability. People with Asperger's see the world differently to other people, which can cause them to act differently too.
Asperger's has wide ranging symptoms, and each person with the condition will have a different experience of the condition. Communication troubles are common, which makes it hard to interact with others. A child with Asperger's may find it hard to understand some parts of language, such as humour.
Asperger's Syndrome is more likely to affect boys than girls. Diagnosis is improving, meaning younger people are being diagnosed earlier, meaning they can get proper help much easier.