This topic hits home with me.
I was never diagnosed with any type of disorder as a child. However, I was not like other children. My IQ has tested fairly high throughout my life , academically I did fairly well, and I learned quickly. Books were my friends as a child. I often struggled with concentrating on things and I've always been very obsessive and compulsive. Growing up, I found many things comical that others did not, I was nervous around people (even those I knew), and eye contact made me uncomfortable. I was not athletic until I got older. Social interactions made me uncomfortable and even though I wanted to have friends, I had very few. My reading comprehension was extraordinarily high, and often I could read something once and recite much of it back, word for word. I could often easily spot patterns, spacial relations were easy for me, and I would have repetitive phrases or songs that would echo in my head over and over again. I still do, actually. As I got older, I had to spend a lot of time watching others and modeling my behavior after those who were more successful in society. I had to train myself to accept eye contact, be more outgoing, communicate better, and stop stuttering when I spoke. It was difficult. But I did it....all on my own. And with some help from a wonderful girl whom I'd met and saw more in me than my stuttering and strange humor or my fixation on patterns and things other people didn't see. We've been married for 15 years, and were exclusive for 7 years before that.
When my son was born, he displayed many traits that were not typical of an infant, and as he grew into a toddler these traits became even more noticeable. Once he was school aged, it was recommended to us to have him evaluated. After multiple evaluations and lots of work, my wife and I were informed that our son tested well within the accepted norms for Autism, specifically Asperger's Syndrome. Now that he is bigger (he's 10 now), I see many of his personality traits and mannerisms are not all that far off from what mine were at the same age. I work with him constantly because I often understand how his mind is working and how he will react or view a certain situation...it makes sense to me. It's a constant challenge and heartbreaking watching him get treated the same as I was by children in his age group; shunned, ignored, bullied, called names like "********", among other things.
I often have wondered if I am also mildly autistic. Although, while my son and I are similar, we are not the same. In addition, I've been living with this "learned behavior" and constructed public personality so long....it's just kinda become "me". Well, to a point.
So yeah, I get what all of you are talking about.