Recovering from anorexia can be a long and difficult process. Often, even after a successful treatment plan, and individual may relapse back into disordered thinking. That's why ongoing therapy for eating disorders is so important. Understanding one’s relapse triggers may help prevent a potential relapse. One common relapse is having an illness, such as the flu, which affects appetite. In times when appetite is diminished, it can be difficult to maintain a healthy eating plan, and the temptation to slip back into a reduced diet may be difficult to resist.