Extended Strong's Greek Lexicon (Abbott-Smith based)
be epileptic
Usage: σεληνιάζω (σελήνη), act, in Manetho (Caren., 4, 81), in NT depon. -ομαι, to be moonstruck, i.e. epileptic (epilepsy being supposed to be influenced by the moon): Mat.4:24 17:15.† (AS)