Title:
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Prevalence, incidence and mortality of epilepsy in four health and demographic surveillance sites in sub-Saharan Africa
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Epilepsy is one of the most prevalent non-communicable conditions and also one of the most
common neurological disorders affecting approximately 50 million people in the world, about
80% of who live in low and middle income countries (LMIC). It is characterized by recurrent
(two or more) unprovoked seizures, with active epilepsy (AE) being defined as at least one
seizure in the last 5 years although in LMIC it is often defined when one of the seizures is within
12 months of identification.
Epilepsy is associated with significant psychosocial co-morbidities that impact on the healthrelated
quality of life of patients and also influence prognosis. In LMIC, the perceptions of
causes and consequences of epilepsy may differ from those in the high income countries (HIC)
and often lead to stigmatization. The stigma may in turn hide a proportion of the burden of
epilepsy since patients are unwilling to seek medical advice, translating into large treatment
gaps. Many studies of LMIC have shown that the majority of PWE do not receive appropriate
treatment despite the availability of cost effective treatment.
The estimates of the burden of epilepsy in LMIC are based upon little data and between and
within country estimates vary considerably. Causes of this heterogeneity have not been
established but it is thought to be due to differences in methodological approaches, case
definitions and ascertainment and lack of validation of screening instruments, as well as genuine
differences in the magnitude of the burden of epilepsy.
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