Hi. I need to learn as much as I can about autism. My cousin is autistic and I want to be better able to understand him. 
Hi there. Autism is an unfortunate birth defect that is commonly associated with troubled social interaction and communication.
Are there different kind of autism? And are there differing degrees of severity?
There is. One of the more known ones is Asperger Syndrome. Aspergers makes it almost impossible to interact whatsoever with anyone.