Hi, father of 8 year old boy diagnosed with AS

Hi, I'm Nemesis. I am a father to two children, a boy (8) and a girl (2) and my boy has been diagnosed with Asperger's Syndrome. This is not a surprise as his mother and I knew something was "off-key."

What has been more difficult is that he has changed from an introverted, sweet boy into an aggressive, angry young man. He is eight years old, but he acts like a teenager. The slightest thing sets him off and he is abusive to his family and teachers. 

It is becoming very hard to deal with and honestly, I am not sure how to handle him.

I signed up for this board in the hope that I might get some advice. Can someone help?