fren·zy 
(frĕnzē)
(frĕnzē)n. pl. fren·zies
1. A state of violent mental agitation or wild excitement.
2. Temporary madness or delirium.
3. A mania; a craze.
tr.v. fren·zied, fren·zy·ing, fren·zies
To drive into a frenzy.
[Middle English frenesie, from Old French, from Medieval Latin phrenēsia, from Latin phrenēsis, back-formation from phrenēticus, delirious; see FRENETIC.]