I'm not aware of having any disorders, but I have the very same problems with chalk, rough concrete, brick, sandpaper, and nail files. When I was younger I couldn't tolerate even the 'thought' of chalk and nail files. Chalk was always my number one creepy thing. I could touch it, but I didn't want to, esp. if it was broken and rough. I couldn't stand nail files until I was in my twenties. I still don't like to use them, but I don't avoid them like I did when I was younger.
I'm a picky eater, though not as much as I was when I was younger. Texture is a huge issue for me when it comes to food. I can look at textures of some foods and become so nauseous that I start to gag. Once that gets into my mind, it's very difficult for me to overcome.
