10 Signs You Might Have Functional Neurological Disorder (FND) A Countdown — With a Nervous System Twist
If you have spent years collecting symptoms that do not quite add up, being told your tests are normal while your body tells a very different story, this one is for you. We are counting down 10 signs that your nervous system might be trying to tell you something important. None of these are signs that something is broken. They are signs that your nervous system has been working overtime to keep you safe.
Let's count it down.
#10 — You Cannot Catch Your Breath and Nobody Knows Why
Hyperventilation, chest tightness, breathing that feels labored for no clear medical reason. Your pulmonologist says your lungs are fine. Your cardiologist says your heart is fine. And yet here you are, breathing like you just ran a 5K while sitting perfectly still on your couch.
Your nervous system is not malfunctioning. It is responding to a threat signal it learned a long time ago; and right now it genuinely believes you need more oxygen to survive whatever it thinks is coming. That is not anxiety being dramatic. That is a protective system doing exactly what it was designed to do.
#9 — You Feel Things That Are Not There. Or You Do Not Feel Things That Are.
Numbness in your hands that comes and goes. Tingling that moves around. A patch of skin that feels like it belongs to someone else. Or the opposite — you touch something and feel nothing at all.
Your nervous system controls every sensory signal your brain receives. When those signals become dysregulated, the brain starts filling in gaps, muting inputs, or amplifying them. It is not imagining things. It is a nervous system that has learned to filter the world in a very particular way; because at some point that filtering kept you safe.
#8 — You Have Lost Your Voice So Many Times You Have Stopped Trying to Explain It
This one comes up in my office more than almost any other symptom. A client will mention almost apologetically that their voice just stops. Mid-sentence. Mid-conversation. Sometimes mid-therapy session. Slurred speech. Stuttering that appeared from nowhere. Words that the brain sends perfectly clearly but the mouth refuses to deliver.
There is nothing wrong with your character. There is nothing weak or broken about you. Your nervous system is protecting you from something that at some point felt genuinely unsafe to say out loud. There is almost always a beautiful and heartbreaking logic to which words get stuck and when. The nervous system is never random. It is always trying to keep you safe.
#7 — Your Pain Has No Fixed Address
It was in your shoulder last Tuesday. Your hip on Wednesday. Your jaw on Thursday. By Friday it had moved to your lower back and brought a headache as a houseguest.
Chronic pain that migrates, shifts, and refuses to stay in one place long enough for anyone to diagnose it is one of the most frustrating and most dismissed FND experiences. Your nervous system is not randomly generating pain signals; it is amplifying threat responses throughout the body in an attempt to get your attention. Consider it gotten.
#6 — Your Emotions Have Their Own Agenda
A client told me recently that she cried at a paper towel commercial and had absolutely no idea why. Or the rage that arrives without warning and leaves just as quickly. Or laughter at something that is genuinely not funny. Emotions that feel borrowed from someone else; or from a much younger version of yourself that you thought you had left behind a long time ago.
Emotional dysregulation in FND is not a character flaw. It is not a mental health crisis. It is a nervous system that learned to express distress in the only language available to it at the time. That language felt necessary once. Nervous systems can learn a new one.
#5 — Your Walk Has Become... Interesting
A sudden limp that was not there yesterday. Legs that feel like they belong to a newborn deer. Balance that comes and goes like an unreliable houseguest. A gait that confuses everyone including you.
Functional gait disturbances happen when the nervous system's motor signaling becomes disrupted; not because of structural damage to your spine or legs, but because the brain's movement programs have been interrupted by a system running on high alert. Your legs work. Your nervous system just forgot to send the memo.
#4 — Your Body Moves Without Your Permission
Tremors that come on suddenly. Shaking that gets worse when you try to control it. Movements that feel completely outside your control and stop as suddenly as they started.
Tremors and functional movement disorders are the nervous system's physical expression of an overwhelmed threat response. The shaking is not weakness. It is energy; a lot of stored, protective energy; looking for somewhere to go. That energy can be redirected. That is exactly what therapy is for.
#3 — You Are Here But You Are Not Quite Here
You are in the room but watching yourself from the ceiling. Your hands do not feel like your hands. The world looks like it is behind a pane of glass. Time does strange things. You go somewhere else without meaning to and come back not quite sure how long you were gone.
Dissociation is one of the nervous system's most sophisticated protective responses. When something is too much to fully experience, the nervous system creates distance. It is not a sign of psychosis or instability. It is a sign that your nervous system learned early that sometimes the safest place to be is somewhere else entirely.
#2 — Your Brain Has Left the Building
You walked into the kitchen for something and now have absolutely no idea what it was. You read the same sentence four times and it still has not landed. You lose words mid-sentence. You forget appointments, conversations, and occasionally where you put your phone — which is in your hand.
Functional fog is what happens when a nervous system running on chronic high alert redirects its resources away from higher cognitive function and toward survival. Your brain is not deteriorating. It is exhausted. There is a significant difference; and that difference matters enormously for how we approach healing.
And here we are. Number one. The sign that sends people to the ER, gets them misdiagnosed, and leaves them feeling more alone than almost anything else in medicine.
#1 — You Have Seizures. But You Do Not Have Epilepsy.
Most people sitting across from me in that first session have already been to the emergency room. More than once. They have had the EEG. They have had the MRI. They have been told the results are normal. And then someone; sometimes gently, sometimes not; suggested it might be stress. Or anxiety. Or something they were doing for attention.
It is none of those things.
Functional seizures; also called Psychogenic Non-Epileptic Seizures or PNES; are the nervous system's most dramatic protective response. When the threat load becomes too much, the system hits a circuit breaker. Not because something is broken. Because something got to be too much to carry. Your nervous system found the only release valve it knew how to use; and it used it.
The seizures are real. The suffering is real. The confusion and the shame and the exhaustion of not being believed are real. And so; with the right support and the right approach; is the possibility of something genuinely different.
So What Does This All Mean?
If you read this list and found yourself nodding, screenshotting, or quietly crying; you are not alone and you are not broken. FND is real, recognized, and treatable. Your nervous system has been doing its absolute best with what it has known. And with the right support, it can learn something genuinely different.
Schedule a free 20-minute consultation at fndcenter.com/contact. No commitment. No pressure. Just a conversation about where you are and whether FND Healing Center might be the right fit for your healing journey.
You do not have to keep searching alone.
