functional neurological disorder

Trial By Error: A Letter Regarding Inflated Prevalence Rates for Functional Neurological Disorder

By David Tuller, DrPH I have posted previously about how papers on functional neurological disorder (FND) have routinely mis-cited a seminal 2010 study in asserting that the diagnosis is the second-most-common presentation at neurology clinics, with a rate of 16%. In fact, the 2010 study found that only 5.5% had FND, the new name for …

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Trial By Error: Questions About the Prevalence of Functional Neurological Disorder and the Research on Hoover’s Sign for Functional Leg Weakness

By David Tuller, DrPH(This is a long-ish post. Sorry! It covers two complicated issues. I want to thank an intrepid source for help with this.) I have great sympathy for patients diagnosed with functional neurological disorder (FND). Their symptoms can be seriously disabling and their plight has long been neglected and dismissed by the medical …

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Trial By Error: Can Functional Neurological Disorder Be an Indication of Prion Disease?

By David Tuller, DrPH A recent article in the Journal of Neurology presents a twist on the issue of functional neurological disorder (FND). The article, which was published in September, is called “Functional neurological symptoms as initial presentation of Creutzfeldt‐Jakob disease: case series.” Creutzfeldt-Jakob disease is a prion disorder that leads to dementia and death, …

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Trial By Error: A Letter About the Inflated Prevalence Rate of Functional Neurological Disorder

By David Tuller, DrPH I have recently written two posts (here and here) about how experts in functional neurological disorder (FND) have a tendency to assert prevalence rates that ignore their own diagnostic criteria. Today I sent a letter to the corresponding author of yet another paper that has similarly engaged in this problematic strategy. …

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Trial By Error: An FND Patient’s View–and More on Those Inflated Prevalence Rates

By David Tuller, DrPH In a post last week, I noted that experts in FND have a tendency to assert prevalence rates that ignore their own diagnostic criteria. Before offering further thoughts on that score, I want to make one point very explicit: I am in no way questioning whether people with the diagnosis have …

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Trial By Error: Does Functional Neurology Disorder Account for a Third of Outpatient Neurology Consults?

By David Tuller, DrPH Functional neurological disorder, or FND, is the new-ish name for the hoary Freudian construct known as conversion disorder. For decades, psychiatrists informed patients that they were “converting” their emotional distress and anxieties into physical symptoms like tremors, seizures, sensory and cognitive deficits, a halting gait, or other physical dysfunctions. The impossibility …

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