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Functional Cognitive Disorder: Differential Diagnosis of Common Clinical Presentations
Steven Kemp1, Narinder Kapur2, Christopher D Graham3
1Leeds School of Social Sciences, Leeds Beckett University, Leeds, UK.
Functional cognitive disorder (FCD) presents distinct clinical features, differentiating it from feigned or psychiatric cognitive complaints. This study aids in precise diagnosis for better patient care and treatment development.
Area of Science:
- Neuroscience
- Psychiatry
- Cognitive Science
Background:
- Cognitive symptoms without neurological disease are common.
- Functional cognitive disorder (FCD) is a proposed cognitive subtype of functional neurological disorder.
- Distinguishing FCD from malingered or factitious cognitive complaints requires further clarification.
Purpose of the Study:
- To differentiate Functional Cognitive Disorder (FCD) from feigned or psychiatric cognitive complaints.
- To provide practical guidance for diagnosing FCD.
- To inform diagnostic precision and treatment protocol development.
Main Methods:
- Literature review on cognitive disorder diagnosis.
- Analysis of seven anonymized case vignettes.
- Development of proposals for diagnostic challenges.
Main Results:
- Functional Cognitive Disorder (FCD) is positioned as distinct from, yet overlapping with, feigning and psychiatric cognitive disorders.
- Typical clinical features and neuropsychological profiles for differentiating cognitive disorders are outlined.
- A statistical method for analyzing performance validity tests is proposed.
Conclusions:
- Recognizing diagnostic system limitations, FCD is distinct from feigning and psychiatric cognitive symptoms.
- Clinical and neuropsychological profiling aids in differential diagnosis.
- Performance validity testing analysis can support the identification of invalid responding.
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