Asperger's syndrome colloquially refers to a high functioning form of autism. People with Asperger's often lack social skills, and sometimes have problems with motor regulation. However their language and cognitive skills are largely intact. Those with Asperger's typically may lack the ability to understand the perspectives and feelings of others to varying degrees.
People with Asperger's often have an orientation toward detail and an interest in systemizing, which can look like obsessiveness. Some may show remarkable facility in a narrowly focused and usually non-social area, such as baseball statistics or train schedules.
Asperger’s is no longer an official diagnosis, though it was once formally classified as separate from other forms of autism in the Diagnostic and Statistical Manual of Mental Disorders (DSM). The behavior ascribed to Asperger’s is now encompassed under the umbrella diagnosis “Autism Spectrum Disorder” in the latest edition, DSM-5.