An Interactional Profile to Assist the Differential Diagnosis of Neurodegenerative and Functional Memory Disorders

The file attached to this record is the author's final peer reviewed version. The Publisher's final version can be found by following the DOI link.Objective: Specialist services for dementia are seeing an increasing number of patients. We investigated whether interactional and linguistic features in the communication behaviour of patients with memory problems could help distinguish between those with problems secondary to neurological disorders (ND) and those with Functional Memory Disorder (FMD). Methods: In Part 1 of this study, a Diagnostic Scoring Aid (DSA) was developed encouraging linguists to provide quantitative ratings for 14 interactional features. An optimal cut-off differentiating ND and FMD was established by applying the DSA to 30 initial patient–doctor memory clinic encounters. In Part 2, the DSA was tested prospectively in ten additional cases analysed independently by two Conversation Analysts blinded to medical information. Results: In part one, the median score of the DSA was +5 in ND and -5 in FMD (p