Hi there. I had ED-NOS (anorexic tendancies, but never meeting the weight requirements as I was rather overweight when it developed; and later I started showing bulimic tendancies) as a teenager, from about 17-20 y.o. It was (partly) the PCOS inability to lose weight any other way that started it, then it grew into a diet-gone-wrong. Very quickly got out of my control.
I'm happy to say it's not an issue for me anymore -at all(I'm almost as heavy as I was before any of that **** developed, but it doesn't really bother me -a true sign that I'm fully recovered

. I found anti-depressants were a godsend, once the right one was found. They don't solve everything, but they do help you cope.)