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Anorexia nervosa other diagnostic studies

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1] Associate Editor(s)-in-Chief: Joseph Nasr, M.D.[2]

Overview

Overview

Additional diagnostic studies in anorexia nervosa are used to assess complications of starvation, evaluate physiologic consequences, and exclude alternative diagnoses, rather than to establish the diagnosis itself. Testing should be guided by clinical findings and illness severity.[1][2]

Bone Health Assessment

Bone Health Assessment

  • Dual-energy X-ray absorptiometry (DEXA) is recommended to evaluate:
    • Decreased bone mineral density
    • Osteopenia or osteoporosis
  • Indicated particularly in individuals with prolonged amenorrhea, delayed puberty, or chronic illness[1][2][3]
Endocrine Studies

Endocrine Studies

  • Reproductive hormone testing (LH, FSH, estradiol or testosterone) may demonstrate hypothalamic hypogonadism
  • Useful in evaluating amenorrhea, delayed puberty, or growth disturbance[1][2]
Cardiac Monitoring

Cardiac Monitoring

  • Continuous cardiac monitoring may be required in individuals with:
    • Severe bradycardia
    • QTc prolongation
    • Significant electrolyte abnormalities
  • Used to detect arrhythmias and assess medical instability[1][2][3][4]
Growth and Developmental Evaluation

Growth and Developmental Evaluation

  • Review of growth curves and pubertal development is essential in children and adolescents
  • Delayed or arrested growth may indicate prolonged or severe disease[2][5]
Psychiatric Evaluation

Psychiatric Evaluation

  • Comprehensive psychiatric assessment is recommended for all individuals with suspected anorexia nervosa
  • Evaluation should include assessment for:
    • Mood disorders
    • Anxiety disorders
    • Obsessive-compulsive disorder
    • Suicidality[2][6][7][8]
Summary

Summary

Aside from laboratory testing, ECG, and bone density assessment, diagnostic studies in anorexia nervosa are selective and problem-driven. Their primary role is to evaluate complications, assess severity, and exclude alternative medical or psychiatric conditions.

References

References

  1. ↑ 1.0 1.1 1.2 1.3 SøebyM, Gribsholt SB, Clausen L, Richelsen B. Fracture risk in patients with anorexia nervosa over a 40-year period. J Bone Miner Res. 2023;38(11): 1586-1593. doi:10.1002/jbmr.4901
  2. ↑ 2.0 2.1 2.2 2.3 2.4 2.5 American Psychiatric Association. Practice Guideline for the Treatment of Patients With Eating Disorders. 4th ed. American Psychiatric Association Publishing; 2023.
  3. ↑ 3.0 3.1 Hornberger LL, Lane MA; Committee on Adolescence. Identification and management of eating disorders in children and adolescents. Pediatrics. 2021;147(1):e2020040279. doi:10.1542/ peds.2020-040279
  4. ↑ Society for Adolescent Health and Medicine. Medical management of restrictive eating disorders in adolescents and young adults. J Adolesc Health. 2022;71(5):648-654. doi:10.1016/j.jadohealth.2022. 08.006
  5. ↑ World Health Organization. ICD-11: International Classification of Diseases, 11th Revision. Accessed May 22, 2024. https://icd.who.int/en
  6. ↑ Udo T, Grilo CM. Psychiatric and medical correlates of DSM-5 eating disorders in a nationally representative sample of adults in the United States. Int J Eat Disord. 2019;52(1):42-50. doi:10. 1002/eat.23004
  7. ↑ Udo T, Bitley S, Grilo CM. Suicide attempts in US adults with lifetime DSM-5 eating disorders. BMC Med. 2019;17(1):120. doi:10.1186/s12916-019-1352-3
  8. ↑ Mills R, Hyam L, Schmidt U. A narrative review of early intervention for eating disorders: barriers and facilitators. Adolesc Health Med Ther. 2023;14: 217-235. doi:10.2147/AHMT.S415698

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