Conversion Disorder


Conversion disorder is when stress causes problems with the nervous system.


The exact cause is not clear. It often happens after a stressful or traumatic event. It is thought that the event causes mental tension that results in problems with the nervous system. An example of this is a person who loses their voice because they are afraid to speak.

Risk Factors

This problem often starts in children aged 10 to 15 years. It may also start in older adults with severe health problems.

Other things that may raise the risk are:

  • Having mental health problems, such as such as depression or anxiety
  • A recent or past stressful or traumatic event
  • Having poor coping skills
  • Being abused as a child
  • Having other family members with similar symptoms, such as epilepsy


Symptoms vary. A person may have problems with:

  • Balance
  • A paralyzed limb
  • Losing feeling in a part of the body
  • Vision or hearing
  • Speaking
  • Swallowing
  • Not feeling pain
  • Tingling or crawling feelings
  • Seizures

Nervous System

Nervous system posterior 3D
An emotional event may trigger physical symptoms.
Copyright © Nucleus Medical Media, Inc.


The doctor will ask about your symptoms and health history. A physical exam will be done.

These tests may also be done:

  • Blood tests
  • ECG—to test heart activity
  • EEG—to test brain activity
  • Imaging tests, such as x-rays or brain scans


This problem may go away on its own in some people.

Others may need therapy. One method is cognitive behavioral therapy (CBT). It helps people learn to cope with stress.

Physical therapy may also be needed to build muscle strength and relearn daily tasks.


There are no known guidelines to prevent this health problem.


American Psychiatric Association
National Institute of Mental Health


Canadian Mental Health Association
Canadian Psychiatric Association


Conversion disorder. Merck Manual Professional Version website. Available at: Accessed November 17, 2020.
Conversion disorder. EBSCO DynaMed website. Available at: Accessed November 17, 2020.
Feinstein A. Conversion Disorder. Continuum (Minneap Minn). 2018 Jun;24(3, BEHAVIORAL NEUROLOGY AND PSYCHIATRY):861-872.
Functional neurological disorder. NORD—National Organization for Rare Disorders website. Available at: Accessed November 17, 2020.
Last reviewed September 2020 by EBSCO Medical Review Board Adrian Preda, MD
Last Updated: 4/14/2021

EBSCO Information Services is fully accredited by URAC. URAC is an independent, nonprofit health care accrediting organization dedicated to promoting health care quality through accreditation, certification and commendation.

This content is reviewed regularly and is updated when new and relevant evidence is made available. This information is neither intended nor implied to be a substitute for professional medical advice. Always seek the advice of your physician or other qualified health provider prior to starting any new treatment or with questions regarding a medical condition.

To send comments or feedback to our Editorial Team regarding the content please email us at Our Health Library Support team will respond to your email request within 2 business days.