I have never been diagnosed with anything like that, BUT, I have been eating paper since I was 9. I still remember how it all started, it was just a joke with my friends because we were hungry so we decided to make fake food out of paper. The joke lasted a few weeks, and now it's just a habit I have. Magazines, newspaper, notes, if it's paper I'll eat it. All my notes from when I was studying are eaten around the edges, I try to go around the writing and just eat the blank stuff.
I've never really thought much of it though.