Signs are avoiding foods, weighing yourself / refusing to step on a scale in front of someone, cold hands and feet, bones sticking out, looking pale
and unhealthy,
ocd about how many calories you can eat, ect.
I used to be anorexic
and it pretty much consumes your every thought and action. you will plan your day around how much exercising you can get in , how you can avoid food while with your friends or family ect.