Primary reading epilepsy.

This is a report of a 23-year-old-man with primary reading epilepsy. He had had three generalized tonic-clonic seizures, each time beginning with visual illusions and occurring while reading a political science text in English with complicated words. He also described tightness and stiffness in the jaw and musculature of mastication for the past 2 years, which only lasted for a few seconds and only appeared while reading political science books in English. He noted that this sensation was associated with misreading of foreign and difficult words and disappeared when he stopped reading. This case report supports the view that difficult words and misreading are provocative factors evoking seizures in reading epilepsy.