21/03/2026
Thereâs a belief floating around that Functional Neurological Disorder (FND) is âfake,â âmade up,â or just a label doctors use when they donât know whatâs going on.
Letâs clear that up properly.
FND is not a diagnosis of confusion. Itâs a diagnosis based on how the nervous system is functioning â not whether the brain or body is physically damaged.
That difference matters.
Most people are familiar with neurological conditions where something is structurally wrong â like a tumour, stroke, or lesion you can see on a scan. FND is different. The brain is structurally intact, but the way it sends and receives signals is disrupted.
Think of it like this:
If a computer has a smashed hard drive, thatâs structural damage.
If the software crashes or glitches, the hardware might be perfectly fine â but things still donât work.
FND sits in that second category.
People with FND can experience very real symptoms:
â Paralysis or weakness
â Non-epileptic seizures
â Tremors or movement issues
â Speech difficulties
â Sensory changes
These arenât imagined. They can be observed, measured, and even tested in specific ways.
Neurologists donât diagnose FND by âgiving up.â They look for positive clinical signs â patterns that are specific to FND.
For example:
â A leg that appears weak in one test but works normally in another automatic movement
â Tremors that change rhythm when distracted
â Seizure-like episodes that donât follow epileptic patterns on EEG
These are not random. They are recognised neurological patterns.
So why the confusion?
Because for a long time, medicine separated âphysicalâ and âpsychologicalâ too sharply. FND sits right in the middle â where brain, body, stress, attention, and environment all interact.
That makes people uncomfortable. Itâs easier to believe something is either clearly broken⊠or not real at all.
But science doesnât support that black-and-white view anymore.
Brain imaging studies have shown differences in how areas involved in movement, emotion, and attention communicate in people with FND. The system is real â itâs just not damaged in the traditional way people expect.
Another reason people dismiss FND is because symptoms can change:
â Someone might walk one day and not the next
â Symptoms can improve with distraction or worsen under stress
That variability doesnât make it fake. It actually fits the diagnosis.
The nervous system is dynamic. It responds to load, emotion, fatigue, and environment â just like heart rate or breathing does.
FND is essentially a problem with how the brain controls the body in real time.
And importantly:
People donât choose it.
People donât fake it.
And itâs not a âlast resort label.â
Itâs a recognised neurological condition diagnosed by specialists all over the world.
The real issue isnât whether FND exists.
Itâs that weâre still catching up in how we understand it, explain it, and support people living with it.
Dismissing it doesnât make it less real.
It just makes it harder for people to get help.
If anything, FND challenges us to rethink how the brain works â not just when itâs damaged, but when its systems fall out of sync.
And thatâs something worth understanding, not brushing off.
