I had the hyperlexia. I taught myself to read by three years of age. My reading ability was tested at university level when I was in the first grade, but I did not understand the majority of what I was able to read. I am not sure precisely where my comprehension was, but it was probably above my grade level - nowhere near what I could read, though.
I found myself using a lot of words and phrases I read in books in conversations without always knowing what they meant (in another thread I mentioned calling my sister a "traitorous b***h," which I had read somewhere, and knew it was something you said if you were upset at someone...I had no idea what it meant).
I started off by reading books about Greek and Norse mythology early on, and then moved on to all kinds of novels, which I would read over and over and over and over and over again. I was generally more interested in reading books than talking to people, being around people doing things with people, or even acknowledging that other people existed.
I identify a lot with what Callista said, especially with the:
Callista wrote:
So really, it wasn't reading early that caused problems; it was that people expected me to do everything else that well, too, and got angry at me because they thought I was "refusing" to do something I could "obviously" do perfectly well because I was "so smart". It didn't help that I was a gifted kid on top of it all, and good at school in general (which is what "gifted" means)--being years behind my peers in other areas wasn't even detected. After all, if your eleven-year-old is reading books bigger than her own head and trying to figure out what Einstein meant by "curved space-time", you don't really expect her to be incapable of brushing her own hair.
With the exception that despite being gifted, I was rubbish at school (I do so much better when I try to learn independently), and many of the things people were angry at me for "refusing to do" involved schoolwork.