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  • Title: Frontal Lobe Epilepsy: A Primer for Psychiatrists and a Systematic Review of Psychiatric Manifestations.
    Author: Gold JA, Sher Y, Maldonado JR.
    Journal: Psychosomatics; 2016; 57(5):445-64. PubMed ID: 27494984.
    Abstract:
    BACKGROUND: Frontal lobe epilepsy (FLE) can masquerade as a primary psychiatric condition, be misdiagnosed in-lieu of a true psychiatric disorder, or may be comorbid with psychiatric illness. OBJECTIVES: To (1) qualitatively review psychiatric manifestations of FLE and (2) to systematically review the cases/case series of psychiatric manifestations of FLE presented in the literature to date. METHODS: A systematic review of the literature was performed following the PRISMA guidelines and using PubMed/Medline, PsychInfo, and Cochrane database of systematic reviews to identify cases and case series of psychiatric manifestations of FLE. RESULTS: A total of 35 separate articles were identified. Further, 17 patients primarily presented with psychosis, 33 with affective symptoms, and 16 with personality changes. Also, 62% of cases were males and 38% were females. Ages ranged from 2-83 years with the average age of 32.7. Prior psychiatric history was reported in 27.3% of cases. Causes of seizure were known in 53%, with the most common causes being dysplasia and tumor. Only 6 cases (<10%) did not have electroencephalographic correlations. Psychiatric manifestations were primarily ictal in 74.3% of the cases. Associated manifestations included motor (63.6%), cognitive (34.8%), and medical (9.0%) findings. Surgery was required in 31.8% of the cases, whereas others were treated with medications alone. All, but 3, patients were seizure free and saw an improvement in symptoms with treatment. CONCLUSIONS: Given the complexity and multifunctionality of the frontal lobes, FLE can present with complex, psychiatric manifestations, with associated motor, cognitive, and medical changes; thus, psychiatrists should keep FLE on the differential diagnosis of complex neuropsychiatric cases.
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