May 21, 2013 | 08:28 AM (BD Time)
21 May, 2013 Tuesday
Schizophrenia and epilepsy have ‘strong link’
People with schizophrenia are six times more likely to develop epilepsy, says a study which finds a strong relationship between the two diseases. Writing in Epilepsia, researchers in Taiwan say this could be due to genetic, neurobiological or environmental factors. The study followed around 16,000 patients with epilepsy and schizophrenia between 1999 and 2008.
An epilepsy expert says it is an interesting and convincing study. The study used data from the Taiwan National Health Insurance database and was led by researchers from the China Medical University Hospital in Taichung. They identified 5,195 patients with schizophrenia and 11,527 patients with epilepsy who were diagnosed during the nine years period. These groups of patients were compared to groups of the same sex and age who did not have either epilepsy or schizophrenia. The findings show that the incidence of epilepsy was 6.99 per 1,000 person-years in the schizophrenia patient group compared to 1.19 in the non-schizophrenia group. The incidence of schizophrenia was 3.53 per 1,000 person-years for patients with epilepsy compared to 0.46 in the non-epilepsy group. Previous studies had suggested a prevalence of psychosis among epilepsy patients. Researchers in this study also found that schizophrenia levels were slightly higher in men with epilepsy than in women with the disease. Dr I-Ching Chou, associate professor with the China Medical University in Taichung inTaiwan, said:
"Our research results show a strong bidirectional relation between schizophrenia and epilepsy. "This relationship may be due to common pathogenesis in these diseases such as genetic susceptibility and environmental factors, but further investigation of the pathological mechanisms are needed." Dr Manny Bagary, consultant neuropsychiatrist in Birmingham, said it was a "very interesting" study.
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