03/08/2026
One of the biggest misconceptions about Functional Neurological Disorder (FND) is that it’s a diagnosis made only after everything else comes back “normal.”
That’s not actually how FND is diagnosed.
FND is identified through positive neurological signs on examination. These are specific patterns that show how the nervous system is functioning, not just the absence of structural damage on imaging or lab tests.
Examples can include:
• Symptoms that change with distraction
• Inconsistent motor patterns
• Specific exam findings like Hoover’s sign
• Sensory or movement patterns that follow functional pathways rather than structural ones
In other words, clinicians aren’t just saying “we didn’t find anything.”
They’re recognizing a different pattern of nervous system dysfunction.
Understanding this distinction matters.
It shifts the conversation from “nothing is wrong” to “the nervous system is functioning differently and that can be treated.”
What was your experience like?