asperger's vs. high functioning autism

[Guest guest]

My 20 year son has recently been diagnosed with Asperger's. Early on, we knew he

had problems and we had him tested numerous times through the schools. I had

many discussions with his pediatrition regarding his symptoms but was never

referred to a pyschiatrist and there was never a diagnosis.

While he has been diagnosed as Asperger's, I am questioning whether it is really

Asperger's or really high functioning autism in that he had a severe early age

speech problem. At age 3, he did not speak and did not seem to understand

words. He was placed into a Special Ed Preschool for children who are

Communicatively Handicapped. He was mainstreamed in 2nd grade and has struggled

ever since. He continues to rock, has poor hygiene, no friends (although

everyone is friendly to him - he doesn't understand the difference), obsessive

behaviours, no social life, etc.

What are the actual differences between Asperger's and high functioning autism?