Functional Neurological Disorder (FND) is often misunderstood, minimized, or missed entirely – especially in high-achieving adults who are used to pushing themselves through discomfort, stress, or pain. Many clients come to treatment only after months (or years) of inconclusive medical tests, contradictory opinions, or symptoms that seem to “defy” the structure of the body.
And yet, FND is neither mysterious nor imagined.
It is a real, physiological, brain-based disruption in how the nervous system functions – one that can completely derail a person’s ability to think clearly, move normally, or trust their own body.
For high-performing adults, the experience can feel especially disorienting:
“How can I run a company but not control my left arm?”
“How can I give presentations to hundreds of people but suddenly struggle to swallow?”
“How can I be so capable and yet my body feels like it’s glitching?”
This article explores why FND frequently appears in high-achieving adults, how symptoms typically show up, and why psychological treatment is a central – yet often overlooked – piece of recovery.
What is FND, Really?
Functional Neurological Disorder occurs when the brain’s software malfunctions, not the hardware.
MRI: normal
Neurological exam: often normal or inconsistent
Bloodwork: normal
Symptoms: very real
In FND, the brain misfires in how it sends and interprets signals. The structure is intact, but the communication system breaks down – especially under prolonged stress, physical depletion, trauma history, perfectionistic pressure, or major life transition.
Common FND symptoms include:
- limb weakness or sudden immobility
- tremors or jerking movements
- nonepileptic seizures
- difficulty walking
- speech disturbances
- swallowing difficulties
- episodes of dizziness or unresponsiveness
- sensory loss or visual changes
To the person experiencing it, symptoms feel as real and frightening as those caused by structural disease.
To the medical system, symptoms can look confusing, inconsistent, or “ruled out.”
And this is where the psychological experience often becomes more painful than the symptoms themselves.
Learn more about FND at the National Institute of Neurological Disorders and Stroke.
Why High-Achieving Adults Are Especially Vulnerable
High-functioning adults don’t typically look like the stereotyped version of “someone under stress.”
They are:
- composed
- articulate
- productive
- accommodating
- accustomed to suppressing needs
- usually praised for their stoicism
This often means a clinician may not see the true level of internal strain.
And the patient doesn’t show it – even to themselves.
Traits that increase susceptibility to functional symptoms
1. Overactive threat monitoring
These individuals often operate with a high, constant level of vigilance – whether for work, relationships, health, or achievement.
The nervous system stays switched on, long after the mind believes it is “handling things well.”
2. Chronic emotional suppression
Many are emotional caretakers, leaders, or the “strong one” in their family.
When emotions are chronically pushed down, the body becomes the one to express the overload.
3. Perfectionism and responsibility overload
The brain begins to interpret normal bodily sensations (fatigue, stress, pain) as threats, triggering protective neurological responses.
4. History of medical trauma or misdiagnosis
Even one destabilizing medical experience can rewire the nervous system’s reactivity.
5. Major life transitions
Illness, caregiving, divorce, parenthood, job changes – even positive transitions – can overwhelm the system.
FND is often not triggered by weakness but by overcapacity.
Why Symptoms Feel So Scary
Functional neurological symptoms disrupt a person’s most fundamental sense of agency:
“Why can’t I trust my legs?”
“Why did my speech just fail?”
“Why is my body shutting down when nothing is ‘wrong’ on a test?”
For high-functioning adults who depend on their cognitive and physical control, this loss feels like a profound violation of identity.
Additionally:
- symptoms are often episodic, making people feel unpredictable
- they may mimic serious neurological disease
- they often peak in settings of pressure or emotional suppression
- they do not respond to reassurance, Google searches, or normal health-anxiety strategies
Many individuals describe feeling “unmoored” – as if the body has its own agenda.
How Therapy Helps (Without Reinforcing the Symptoms)
While FND is neurological, treatment is behavioral and psychological because the symptom pathways are learned, reinforced, and modifiable.
Highly effective interventions include:
1. Psychoeducation without catastrophizing
Clients are taught how the brain misroutes signals – not that symptoms are imagined.
This alone often reduces fear dramatically.
2. Interoceptive retraining
Clients learn to approach bodily sensations rather than brace against them.
3. Nervous system stabilization
Structured approaches help regulate threat detection, reduce autonomic overload, and retrain normal movement patterns.
4. Cognitive reframing for performance-based anxiety
High achievers often evaluate themselves harshly.
Reworking these patterns reduces neurological overactivation.
5. Exposure-based retraining (for movement, speech, or swallowing)
This helps the brain rebuild accurate motor pathways.
6. Addressing the invisible emotional load
Often what breaks the nervous system is not stress – but the habit of enduring stress without support.
With the right treatment, symptoms can improve significantly, and many patients return to full functioning.
Learn more about specialized care at Advanced Behavioral Health.
Why Many Doctors Miss It
Not because they’re careless – but because FND sits at the intersection of:
- neurology
- physiology
- psychology
- stress science
In busy clinical environments, the nuance gets lost.
If tests are normal, patients may hear:
“Everything is fine.”
“It’s anxiety.”
“It’s in your head.”
This is where people feel dismissed, invalidated, or even humiliated.
High-achieving adults, in particular, often feel defeated by this moment – as if the body betrayed them and the medical system abandoned them.
Good psychological treatment bridges this gap.
Final Thoughts
Functional neurological symptoms are not a sign of weakness, breakdown, or imagined illness. They are a sign of a nervous system that has reached capacity, often after years of living in high-pressure, high-responsibility modes.
With proper treatment, people do get better.
And critically – nothing has to be “structurally wrong” for your experience to be real.
About Dr. Suzanne Feinstein
Dr. Suzanne Feinstein is a Columbia University trained licensed clinical psychologist specializing in anxiety disorders, OCD, complex somatic symptoms, and high-functioning adults who appear outwardly successful while managing intense internal distress. She serves as a liaison between medical and psychological care, offering evidence-based treatment for individuals navigating unexplained symptoms, medical uncertainty, and performance-related anxiety.
Learn more or schedule a consultation at https://behaviortherapynyc.com/