Why has Autism Been turned into an umbrella diagnosis?

Say, I’ve doing some thinking. You see, I was diagnosed with Asperger’s syndrome pretty young, and I guess I’m not “normal” in the truest sense of the word. I tend to keep to myself, have some rather eccentric hobbies, along with a tendancy to fixate on a certain topic or train of thought for weeks … More Why has Autism Been turned into an umbrella diagnosis?