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. 2016 Jun 17;12:1425–1434. doi: 10.2147/NDT.S107905

Table S1.

The summary of the percentage of each cause of new-onset epilepsy in the elderly

Cerebrovascular diseases account for 30%–50%.
Primary neurodegenerative disorders account for ~10%–20%.
Head trauma accounts for 10%–20%.
Brain tumors account for nearly 10%–30%.
One-third to one-half of geriatric epilepsies still have undetected causes, to date.