Feeding and Eating Disorders
Anorexia Nervosa
ICD-10-CM: F50.00, F50.01, F50.02
1. Criteria
DSM Criteria
Criterion A
- Restriction of energy intake leads to significantly low body weight in the context of age, sex, developmental trajectory, and physical health.
DSM Criteria
Criterion B
- There is intense fear of gaining weight or becoming fat, or persistent behavior that interferes with weight gain.
DSM Criteria
Criterion C
- There is disturbance in body-weight or shape experience, undue influence of body weight or shape on self-evaluation, or persistent lack of recognition of the seriousness of low body weight.
2. Context
- Anorexia nervosa is not just low weight. It is a pattern of restriction, fear of weight gain, and body-image distortion that pulls eating, identity, and self-evaluation into a narrow and often dangerous cycle.
- Low weight required: Significantly low weight remains part of the core diagnosis, so the syndrome is not defined by thoughts alone.
- Psychological drivers: The fear of weight gain and the distorted relationship to body shape help distinguish anorexia from other causes of weight loss.
- Subtype thinking: It is still helpful to ask whether the picture is primarily restrictive or whether binge-purge behaviors are also part of it.
- Clinical focus: Common self-report eating-disorder symptom measure.
3. Validated scales
EDE-Q
Common self-report eating-disorder symptom measure.
Eating Disorder Examination
Structured interview for diagnostic clarification and symptom severity.
BMI and medical monitoring
Not a psychiatric scale, but essential for severity and medical risk framing.
4. FDA approved treatments
Diagnosis-specific FDA indications
This prototype does not list a core anorexia-nervosa-specific FDA medication indication; treatment is centered on nutritional rehabilitation, psychotherapy, and medical stabilization. Verify current labeling for any symptom-targeted use.
No diagnosis-specific FDA medication entry is listed in this prototype section.
Common off-label medications
Interventional psychiatry modalities
- ECT may be considered in severe comorbid depression or life-threatening psychiatric deterioration.
- Ketamine is not a standard anorexia treatment and remains investigational.
- TMS is under study but not established for anorexia nervosa.
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5. Top management articles
- Management review for Anorexia Nervosa PubMed search
- Anorexia Nervosa treatment guideline PubMed search
- Anorexia Nervosa pharmacotherapy or psychotherapy review PubMed search