A common symptom of functional neurological disorder is functional limb weakness. It is diagnosed based on positive features of internal inconsistency. The hallmark of functional limb weakness is the existence of internal inconsistency revealing a pattern of symptoms governed by abnormally focused attention. Adverse childhood experience arises as a clear risk factor for functional motor disorders but also varies largely according to the setting and duration of symptoms and is not present in the majority of patients.
These experiences occur at the same frequency as that found in people with psychiatric disorders and other conditions including functional disorders. Birth order has been noted as a predisposing factor for Functional Neurological disorder. Certain personality traits also have an association with functional neurological disorders. A history of neurological and other disease diagnoses is very common in functional neurological disorders and is considered an important predisposing risk factor.Functional limb weakness is associated with several possible antecedent predisposing factors.
