9 letters · 14 points in Scrabble
noun inflammation of the brain usually caused by a virus; symptoms include headache and neck pain and drowsiness and nausea and fever (`phrenitis' is no longer in scientific use)
originFrom Latin phrenītis, from Ancient Greek φρενῖτις (phrenîtis), from φρήν (phrḗn, “mind”).
Etymology from Wiktionary, CC BY-SA 3.0