conversion disorder/functional neurologic symptom disorder

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Introduction

Loss or impairment of function suggestive of a neurologic disorder resulting as a manifestation of psychological conflict or need.

* not explained by medical condition & inconsistent with physical exam[2]

Etiology

Pathology

  • no brain damage

Physical examination

Clinical manifestations

Management

  • supportive measures
  • 'face-saving' techniques
  • encouragement that symptoms will resolve

More general terms

More specific terms

References

  1. Saunders Manual of Medical Practice, Rakel (ed), WB Saunders, Philadelphia, 1996, pg 1105-1107
  2. 2.0 2.1 Medical Knowledge Self Assessment Program (MKSAP) 11, American College of Physicians, Philadelphia 1998
    Medical Knowledge Self Assessment Program (MKSAP) 19 Board Basics. An Enhancement to MKSAP19. American College of Physicians, Philadelphia 2022
  3. Stone J et al, Systematic review of misdiagnosis of conversion symptoms and hysteria. BMJ 331:989, 2005 PMID: https://www.ncbi.nlm.nih.gov/pubmed/16223792
  4. Espay AJ, Aybek S, Carson A et al Current Concepts in Diagnosis and Treatment of Functional Neurological Disorders. JAMA Neurol. Published online June 4, 2018. PMID: https://www.ncbi.nlm.nih.gov/pubmed/29868890 https://jamanetwork.com/journals/jamaneurology/fullarticle/2682656
  5. Gelauff JM, Carson A, Ludwig L et al. The prognosis of functional limb weakness: A 14-year case-control study. Brain 2019 Jul; 142:2137 PMID: https://www.ncbi.nlm.nih.gov/pubmed/31167232
  6. 6.0 6.1 Geriatric Review Syllabus, 10th edition (GRS10) Harper GM, Lyons WL, Potter JF (eds) American Geriatrics Society, 2019
  7. 7.0 7.1 7.2 Frowry F Two More Reports of Functional Neurological Disorder After COVID-19 Vaccine. Medscape. August 30, 2021 https://www.medscape.com/viewarticle/957479
    Kim DD, Kung CS, Perez DL Helping the Public Understand Adverse Events Associated With COVID-19 Vaccinations. Lessons Learned From Functional Neurological Disorder. JAMA Neurol. 2021;78(7):789-790. PMID: https://www.ncbi.nlm.nih.gov/pubmed/33835153 https://jamanetwork.com/journals/jamaneurology/fullarticle/2778192
  8. 8.0 8.1 8.2 Butler M, Coebergh J, Safavi F et al Functional Neurological Disorder After SARS-CoV-2 Vaccines: Two Case Reports and Discussion of Potential Public Health Implications. J Neuropsychiatry Clin Neurosci. 2021. July 15. PMID: https://www.ncbi.nlm.nih.gov/pubmed/34261345 https://neuro.psychiatryonline.org/doi/10.1176/appi.neuropsych.21050116