phrĕnēsis, is, f., = φρένησις,
madness , delirium , frenzy : phrenesis tum demum est, cum continua dementia esse incipit, etc., Cels. 3, 18 (al. phrenitis; shortly before written as Greek, φρένησις): die et phrenesin et insaniam viribus necessariam, Sen. de Ira, 1, 13, 3: manifesta, Juv. 14, 136; Ser. Samm. 7, 90; Prud. Hamart. 125.