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Clinical resource

Functional Neurological Disorder: Assessment and Multidisciplinary Care

Functional neurological disorder requires a positive diagnosis and an individualized care plan. Learn what assessment should establish, how rehabilitation and psychological support fit together, and when new symptoms need urgent medical attention.

Written by THE BALANCE

Clinically reviewed byDr. Sarah Boss, MD
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Quick Summary

  • Conversion disorder involves genuine neurological symptoms affecting movement or sensation that are not explained by an apparent neurological or medical cause.
  • Symptoms may include weakness, paralysis, seizures, speech or movement disturbances, visual changes, numbness, and difficulties with memory or concentration.
  • Assessment should exclude other causes, while treatment may involve psychotherapy, physical therapy, support for co-occurring anxiety or depression, and coordinated medical care.

Functional neurological disorder can make movement, sensation, speech, or awareness difficult to control. The symptoms are real, and appropriate care begins with a clear medical explanation rather than dismissal. This guide explains positive diagnosis, necessary assessment, multidisciplinary treatment, and practical support for adults and their families. [2]

Functional neurological disorder, or FND, involves genuine neurological symptoms related to disrupted functioning rather than structural damage that explains those symptoms. It is not deliberate behavior or something a person can simply switch off. Weakness, abnormal movements, altered sensation, speech difficulties, and seizure-like episodes can all occur. [2]

You may have encountered the older term conversion disorder. DSM-5-TR uses functional neurological symptom disorder first, with conversion disorder in parentheses. This change matters because the older name suggests a psychological cause that should not be assumed. [1]

FND is not a catch-all label for symptoms that clinicians find difficult to explain. You deserve an explanation grounded in your own assessment. This guide focuses on how that assessment should connect with practical care.

Symptoms and Their Effect on Everyday Life

FND can affect walking, limb strength, coordination, sensation, speech, or awareness. Functional seizures, also called dissociative seizures, can resemble epileptic seizures. Pain, fatigue, poor concentration, and sleep problems may accompany the neurological symptoms and contribute substantially to disability. [2], [4]

Describe the impact as well as the symptom. Can you prepare meals, shower safely, use stairs, attend appointments, or remain at work? Does fatigue interrupt rehabilitation? Are episodes making you afraid to leave home? These details help clinicians understand what support you need beyond a diagnostic label.

Prepare a brief timeline of symptoms, relevant illnesses or injuries, current medications, and previous assessments. Record different episode types separately rather than assuming they share one cause. If you have existing reports, ask how to send them before the appointment so the clinician can review what has already been investigated.

FND should be supported by positive clinical findings, not diagnosed solely because a scan is normal. A neurologist typically considers your history and examination, looking for patterns characteristic of functional symptoms. [2]

For example, Hoover's sign can show a difference between voluntary leg movement and movement produced automatically during another task. Such findings are clinical evidence, not proof that someone is pretending. They require professional interpretation and are not home diagnostic tests. [3]

Ask, 'Which findings support FND in my case?' and 'How do those findings explain my symptoms?' Request a written explanation if the consultation is difficult to absorb. You can also ask which symptoms remain uncertain and whether follow-up or a second opinion would be appropriate.

A useful explanation should leave room for questions. Agreement cannot be demanded before your concerns have been heard. Understanding the diagnosis is a treatment starting point, but it should not become a test of obedience or a reason to withhold appropriate assessment.

Medical Assessment and Diagnostic Uncertainty

Assessment should consider other explanations and additional conditions. An FND diagnosis does not mean that every future symptom is functional. For seizure-like episodes, current American Academy of Neurology guidance recommends obtaining patient and witness information, considering videos, and using video-EEG where feasible to assess typical events. It also recommends assessment for co-occurring epilepsy. [5]

Ask what each proposed investigation could clarify and how its result would change care. Conversely, if no further testing is recommended, ask why the existing assessment is sufficient. This supports an informed discussion rather than an endless search for tests or an automatic refusal to investigate.

Bring a complete medication list, including nonprescription products, and describe alcohol or other substance use honestly. Tell the clinician about falls, injuries, loss of awareness, swallowing concerns, or a changed symptom pattern. Ask for explicit instructions about what requires routine review, urgent assessment, or emergency help.

Care can combine neurological input, physical rehabilitation, occupational therapy, psychological treatment, and support for related health difficulties. The combination should reflect your symptoms and goals, not a standard package offered to everyone. Speech difficulties may also require an appropriate specialist assessment. [2]

Ask who coordinates the plan and how the professionals communicate. If one clinician recommends movement practice while another recommends rest, request clarification rather than trying to reconcile conflicting advice alone. Useful goals might include dressing with less assistance, preparing a meal, or returning to a manageable part of your work.

Our guide to choosing a level of care explains differences between outpatient, intensive, residential, and hospital settings. Before selecting a program, ask whether it has FND-specific expertise and access to the neurological and rehabilitation services you need.

THE BALANCE is not an emergency service. An inquiry does not confirm suitability or access to every specialist intervention. Any proposed private care should complement necessary medical assessment, not replace it.

Physical Rehabilitation and the Evidence Behind It

For motor symptoms, FND-informed physical therapy may focus on restoring movement patterns and confidence in functional activity. Occupational therapy can connect rehabilitation with routines, independence, and employment needs. Ask how treatment will be adapted to your particular movement difficulties and any accompanying pain or fatigue. [2]

Evidence supports a measured discussion rather than a promise. In the 2024 Physio4FMD randomized trial, specialist physical therapy did not significantly outperform community neurological physical therapy on the primary physical-functioning outcome at 12 months. Some secondary outcomes favored specialist treatment, including patients' own ratings of motor improvement. Both approaches were valued by selected participants. [6]

Ask your therapist what safe practice between appointments looks like and how to respond if it becomes difficult. Agree goals and review dates rather than measuring success only by whether symptoms disappear. Discuss mobility aids and assistance individually, including how they support safety and participation alongside rehabilitation.

Psychological support can help with the distress of living with FND and with patterns that may maintain difficulties. It does not require the conclusion that emotions caused every symptom. Stress or trauma may be relevant for some people, but an identifiable psychological trigger is not necessary. [4]

The cognitive behavioral therapy overview explains the general therapy approach. For functional seizures, the specialist adaptation addresses seizure-related experiences and behavior within coordinated medical care. It should not be confused with generic CBT delivered without knowledge of the condition.

In the CODES randomized trial, seizure-specific CBT plus standardized medical care did not significantly reduce monthly seizure frequency more than standardized care alone at 12 months, the primary outcome. Benefits appeared in several secondary outcomes, including psychosocial functioning and how bothersome seizures felt. These findings support individualized discussion, not a guarantee of seizure freedom. [7]

Ask the therapist which problems treatment will address and how improvement will be evaluated. If trauma is relevant, discuss readiness and an appropriate clinical approach. You should not be pressured to disclose trauma or attempt exposure exercises on your own.

Co-Occurring Conditions and Medication Review

Pain, sleep disruption, low mood, anxiety, and concentration problems can complicate daily life alongside FND. They deserve attention rather than being dismissed as secondary or assumed to explain the entire condition. Not everyone needs psychiatric treatment, and referrals should match the assessment. [4]

If detachment or an unreal feeling accompanies episodes, describe its timing and duration. Our adult dissociation treatment overview discusses assessment in THE BALANCE's European residential context, in Switzerland and Spain. Dissociation does not by itself establish FND, epilepsy, or a particular trauma history.

There is no established medication that directly treats all FND symptoms. Medication may instead address a related condition. For functional seizures alone, AAN guidance advises against antiseizure medications or benzodiazepines without another indication. Any medication withdrawal needs prescriber supervision, not a self-directed taper. [2], [5]

Ask each prescriber what the medicine is treating, what benefit is expected, and when it will be reviewed. Clarify who oversees medication decisions if several clinicians are involved.

Call 911 for possible stroke symptoms, including sudden one-sided weakness, facial drooping, difficulty speaking, sudden vision changes, or a sudden severe unexplained headache. An existing FND diagnosis must not delay emergency assessment of a new possible stroke. Note when symptoms began. [8]

For a first or undiagnosed seizure-like event, call 911 and follow seizure first aid while help is on the way. Stay with the person, time the event, clear nearby hazards, and protect the head with something soft if feasible. If the person is lying down, turn them gently onto their side when possible. Do not restrain them or put anything in their mouth. CDC also advises calling 911 for events lasting longer than five minutes, repeated seizures, breathing or waking difficulties, injury, or an event in water. [9]

Once functional seizures are confirmed, ask the clinician for an individualized written response plan. It should distinguish familiar episodes from changes requiring assessment, particularly if epilepsy also occurs. General first aid information is not a substitute for that plan.

For suicidal thoughts or a mental health crisis in the United States, call or text 988. Call 911 for immediate danger. Our mental health safety planning guide can support a clinical conversation, but a plan does not replace emergency help. [10]

Start by taking the person's account seriously: 'I believe you. What would help today?' Avoid treating changes in symptoms as evidence of dishonesty. Sharing clear information about FND can help relatives remain calmer when symptoms occur. [4]

With the person's agreement, ask to attend part of an appointment or receive instructions about episodes and practical assistance. AAN guidance supports involving family or other supporters in psychological treatment for functional seizures. [5]

Clarify assistance rather than guessing. Ask whether help is needed with transport, meals, appointment notes, or a rehabilitation task. Discuss what the person wants to attempt independently and what still requires support. Do not turn everyday activities into surprise tests of their ability.

Supporters also need boundaries. Ask the team whom to contact when difficulties arise and what to do if you cannot provide the expected help. Family involvement should respect consent and safety, especially when relationships are strained or harmful.

Recovery varies. Some people improve substantially, while others continue to have disabling symptoms. Neither a normal scan nor a convincing diagnosis predicts a guaranteed recovery timetable. The physical therapy trial also shows why improvement in one outcome should not be presented as proof of improvement in every area. [2], [6]

Review more than symptom frequency. Can you participate in valued activities, travel more safely, manage personal care, or communicate your needs earlier? Ask which outcomes matter most to you and how the team will track them. Progress can be meaningful even when some symptoms remain.

Before a treatment phase ends, request a named follow-up clinician, appointment arrangements, a rehabilitation summary, and instructions for changed symptoms. Check practical barriers such as insurance coverage, transportation, and referral requirements.

A setback is a reason to reassess the plan, not assign blame. Ask what changed, whether additional medical review is needed, and which goals remain realistic. Continuing care should preserve access to support rather than make symptom-free performance a condition of receiving it.

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Questions

Frequently Asked Questions

Is functional neurological disorder the same as conversion disorder?

Conversion disorder is an older name still encountered in records. DSM-5-TR places functional neurological symptom disorder first, with conversion disorder in parentheses. The updated terminology avoids assuming that psychological distress has been converted into physical symptoms. [1]

Can a normal MRI prove that I have FND?

No. A normal MRI alone does not establish FND. Diagnosis depends on the history and positive clinical findings that support a functional explanation. Scans or other investigations may still be appropriate to assess alternative or additional conditions. Ask which findings support your particular diagnosis. [2], [3]

Can functional seizures and epilepsy happen in the same person?

Yes. Clinicians should assess for co-occurring epilepsy rather than assume that every episode is functional. Describe each different event type. Witness accounts and, where feasible, video-EEG can help clarify the diagnosis and inform a separate response plan for different episodes. [5]

Why might psychological therapy help if my symptoms are neurological?

Therapy can address responses to symptoms, distress, avoidance, and co-occurring mental health difficulties without implying that symptoms are imaginary. Functional seizure-specific CBT has shown benefits for some outcomes, but the CODES trial did not establish a significant advantage for its main seizure-frequency outcome. [4], [7]

Should I stop antiseizure medication after an FND diagnosis?

Do not stop it yourself. Antiseizure medication does not treat functional seizures alone, but you may have epilepsy or another reason to take it. A prescriber should review the indication and supervise any withdrawal, with an agreed plan for monitoring and worsening symptoms. [5]

Does persistent FND mean that recovery is impossible?

No. Improvement remains possible, although outcomes vary and some people have continuing symptoms. Recovery goals can include safer mobility, greater independence, and participation in daily life. Persistent symptoms should prompt a review of needs and treatment rather than blame or promises of a guaranteed cure. [2], [6]

Editorial evidence

Evidence & sources

Selected clinical guidelines, peer-reviewed research, and public-health sources used in this article.

01American Psychiatric Association: Functional Neurological Symptom Disorder (Conversion Disorder), DSM-5-TR terminologyView source
02Worcestershire Acute Hospitals NHS Trust: What Is Functional Neurological Disorder?View source
03Birmingham and Solihull Mental Health NHS Foundation Trust: Functional Neurological Disorders, Patient Information LeafletView source
View all 10 sourcesShow fewer sources
04Gloucestershire Hospitals NHS Foundation Trust: Functional Neurological SymptomsView source
05American Academy of Neurology: Management of Functional Seizures Practice Guideline Executive SummaryView source
06Nielsen and colleagues: Specialist Physiotherapy for Functional Motor Disorder, Physio4FMD Randomized Controlled TrialView source
07Goldstein and colleagues: Cognitive Behavioral Therapy for Adults With Dissociative Seizures, CODES Randomized Controlled TrialView source
10National Institute of Mental Health: 5 Action Steps to Help Someone Having Thoughts of SuicideView source
What this includes
01

Clinical context

Clear information is framed around complex and co-occurring presentations.

02

Individual factors

Assessment remains essential because needs and risks differ from person to person.

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