How is anorexia nervosa staged?

Updated: Jun 10, 2019
  • Author: Bettina E Bernstein, DO; Chief Editor: Caroly Pataki, MD  more...
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Diagnosis of anorexia nervosa continues to include an early (or mild) stage, when there has not yet been any treatment initiated and the patient has significant signs and symptoms involving fear and disturbance of perception regarding normal body weight status, including dietary habits to prevent weight gain. Additional significant criteria include the presence of a body mass index (BMI) less than the third percentile and an established/severe stage (sometimes labelled stage 6 by some investigators) in which end-organ complications that involve the cardiac, renal, and endocrine systems can place the person at risk of death or significant morbidity. [89, 90, 91]

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