That's interesting. I've heard several people say they developed insomnia as teenagers, but for me it was ever since I was a kid. My parents would always get annoyed with me when I was young because I would talk with my siblings all night instead of sleeping.
I should ask my mum about this, maybe the IRC was a byproduct of insomnia, I'm not sure. FWIW I'm also dyslexic and when I do sleep, I almost never dream.