Said by no neurologist ever... This reflects a complete lack of understanding of the diagnostic criteria. FND is not just a diagnosis made when it doesn't fit anything else. If you actually understood the diagnosis and still felt like it was BS for some reason, it would be because you would be arguing that patients are intentionally feigning their symptoms rather than "the diagnosis just does not exist at all" or that symptoms can be explained by an immunological or other medical cause. Just ask Dr. Google about the Hoover's sign or tremor entrainment and once you understand them, the corticospinal tract, and the most basic neuroanatomy of movement, and then see how big of an idiot you look like for posting this.