The prevalence of focal seizures varies globally and is influenced by several factors such as genetics, environmental exposures, and healthcare access. In high-income countries, the lifetime prevalence of epilepsy, which includes focal seizures, is estimated to be about 0.5-1%. In low- and middle-income countries, the prevalence can be higher, often due to factors like neurocysticercosis, traumatic brain injuries, and inadequate healthcare services.
