Coexisting Postural Orthostatic Tachycardia Syndrome on Autonomic Reflex Testing in Functional Neurologic Disorder

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17 Oct 2026 0 comments

BACKGROUND Functional neurological disorder (FND) is characterized by neurological symptoms identified through positive clinical signs that are incongruent with recognized structural neurological disease. Postural orthostatic tachycardia syndrome (POTS), in contrast, is defined by excessive orthostatic tachycardia and is associated with a range of multisystem autonomic symptoms. Shared clinical features can blur diagnostic boundaries. As a result, new or evolving symptoms in patients with a...