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Do mood instability symptoms in epilepsy represent formal bipolar disorder?
Connie Lau1, Alan B Ettinger, Sandra Hamberger
1Department of Neurology, North Shore-LIJ Health System, New Hyde Park, New York, USA.
Epilepsia
|January 7, 2012
Summary
In epilepsy patients, bipolar symptoms detected by the Mood Disorder Questionnaire (MDQ) are common but often not true bipolar disorder. These symptoms significantly worsen quality of life and daily functioning.
Area of Science:
- Neurology
- Psychiatry
- Quality of Life Research
Background:
- Epilepsy is frequently associated with mood disturbances.
- Differentiating bipolar symptoms from diagnosed bipolar disorder in epilepsy patients is crucial for accurate treatment.
Purpose of the Study:
- To evaluate the prevalence of bipolar symptoms versus diagnosed bipolar disorder in epilepsy patients.
- To determine the impact of bipolar symptoms on the quality of life (QOL) in individuals with epilepsy.
Main Methods:
- Administered validated instruments for bipolar symptoms, disability, and QOL to 99 tertiary epilepsy center patients.
- Patients screening positive on the Mood Disorder Questionnaire (MDQ) underwent further assessment with depression scales and a structured psychiatric interview.
Main Results:
- 10.1% of epilepsy patients screened positive on the MDQ.
- MDQ-positive patients reported significantly worse QOL and greater disruptions in work, social, and family life.
- The majority of MDQ-positive patients did not meet diagnostic criteria for bipolar disorder, showing overlap with depressive symptoms.
Conclusions:
- Bipolar symptoms, as indicated by the MDQ, are not equivalent to a diagnosis of bipolar disorder in epilepsy.
- Symptoms identified by the MDQ may represent epilepsy-related depressive symptoms.
- The presence of bipolar symptoms is linked to increased disability, diminished QOL, and potential treatment considerations in epilepsy management.
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