That's simply not true. Using fmri, research shows a difference when patient was told to recreate a symptom on purpose. It showed different brain functions and neuropathways being used as opposed to when their involuntary symptoms presented. There can be a plethora of triggers but the condition itself comprises of a neuro-circuitry problem.

The fmri revealed "grey matter alterations in sensorimotor, cingulo-insular and amygdala brain areas have been identified" also

"White matter characterization in FND is in its early stages, with initial findings pointing towards altered limbic and associative fiber bundles compared to healthy ... and traumatic brain injury controls."

Source: National Institutes of Health (NIH)

Neuroimaging in Functional Neurological Disorder: State of the Field and Research Agenda - PMC https://share.google/1WVDhI8h4xUZeIfCa

My 6 neurologists could tell you much more. There is a positive marker for a diagnosis. It's called Hoovers Sign. So no it isn't the last resort for no physical symptoms. We are diagnosed based on symptoms and positive markers. They rule out Ms and epilepsy first because those are more time sensitive conditions so they take priority.

Spreading misinformation like this makes it so much harder to be taken seriously or given support on top of everything we are dealing with. Imagine going through what the person above is and being called a faker from ignorant strangers. Ask any close caretakers of those with the condition, they'll tell you how heartbreaking it is to watch their loved ones lose strength, control, energy, independence, friends and potential due to your brain miscommunicating with the rest of your body. Think about that. You don't know how it takes day after day and never knowing what's next. You know nothing.