Conversion Disorder (also known as Conversion Disorders, Functional Movement Disorder): A disorder whose predominant feature is a loss or alteration in physical functioning that suggests a physical disorder but that is actually a direct expression of a psychological conflict or need.

NIH MeSH · D003291Psychiatry and Psychology

Conversion Disorder

Also known asConversion Disorders · Functional Movement Disorder · Disorder, Functional Movement · Functional Movement Disorders · Movement Disorder, Functional · Movement Disorders, Functional · Functional Neurological Disorder · Disorder, Functional Neurological · Functional Neurological Disorders · Neurological Disorder, Functional · Neurological Disorders, Functional · Conversion Reaction

Definition

A disorder whose predominant feature is a loss or alteration in physical functioning that suggests a physical disorder but that is actually a direct expression of a psychological conflict or need.

MeSH classification

  • F03.875.300

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Related concepts

Body Dysmorphic Disorders

Preoccupations with appearance or self-image causing significant distress or impairment in important areas of functioning.

Body Integrity Identity Disorder

Condition in which individuals desire the amputation of one or more healthy limbs or who desire a paralysis.

Common questions about Conversion Disorder

What does Conversion Disorder mean in medicine?
A disorder whose predominant feature is a loss or alteration in physical functioning that suggests a physical disorder but that is actually a direct expression of a psychological conflict or need. This definition is taken from the National Library of Medicine's MeSH (Medical Subject Headings) 2026 release, which is the standard vocabulary used to index PubMed and most medical literature.
Is Conversion Disorder known by any other names?
Yes. Conversion Disorder is also referred to as Conversion Disorders, Functional Movement Disorder, Disorder, Functional Movement, Functional Movement Disorders in different clinical, research and patient-facing contexts. The MeSH descriptor groups all of these synonyms under a single canonical concept so research and records stay consistent.
Where does Conversion Disorder sit in the medical classification?
Conversion Disorder falls under the broader medical category "Psychiatry and Psychology" in the MeSH hierarchy (tree numbers: F03.875.300). Browsing the related concepts on this page takes you to neighbouring topics in the same branch of medicine.
Where can I get a plain-language explanation of Conversion Disorder?
For a plain-language explanation of Conversion Disorder - including symptoms, treatments and what it means for an Indian patient - ask GoDavaii's Health AI. It works in 22+ Indian languages, is free and needs no signup. Tap "Ask GoDavaii AI about Conversion Disorder" above.

Source: NIH MeSH 2026 (D003291) — National Library of Medicine, public domain. View official MeSH record ↗