Lewis Short
vēsānĭa | vaesā- (noun F) : (), , vesanus
* Madness, insanity (very rare): extimui, ne vos ageret vesania discors,Hor. S. 2, 3, 174: simulata (Ulixis),Plin. 35, 11, 40, § 129: formidabatur flagrans vesania manus,Amm. 14, 2, 15.
Charlton T. Lewis, Charles Short, A Latin Dictionary