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  • Title: Psychiatric comorbidity in psychogenic nonepileptic seizures compared with epilepsy.
    Author: Diprose W, Sundram F, Menkes DB.
    Journal: Epilepsy Behav; 2016 Mar; 56():123-30. PubMed ID: 26874243.
    Abstract:
    OBJECTIVES: Psychogenic nonepileptic seizures (PNESs) are closely linked with psychological distress, but their etiology is not well-understood. We reviewed psychiatric comorbidity in PNESs and epileptic seizures (ESs) with an aim to assist understanding, diagnosis, and management of PNESs. METHODS: A search of Web of Science, MEDLINE (PubMed), PsycINFO, and Scopus identified 32 relevant studies on the prevalence of psychiatric comorbidity in PNESs. We used meta-analysis to compare psychiatric comorbidity between PNESs and ESs. RESULTS: Samples with PNESs had high rates of psychiatric comorbidity overall (53-100%), notably including posttraumatic stress disorder (PTSD), depression, and personality and anxiety disorders. Compared with ESs, samples with PNESs had more psychiatric comorbidity overall (RR: 1.30, 95% CI: 1.14-1.48, p<0.0001) with significantly elevated risks found for PTSD, personality disorder, and anxiety but not depression. CONCLUSIONS: Psychiatric disorders are more common in PNESs than ESs. Because of methodological limitations of available studies, causality cannot be established; prospective longitudinal designs are required.
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