Panicked

A panicked creature must drop anything it holds and flee at top speed from the source of its fear, as well as any other dangers it encounters, along a random path. It can’t take any other actions. In addition, the creature takes a -2 penalty on all saving throws, skill checks, and ability checks. A panicked creature can not use special abilities, nor spells, to flee.

Panicked is a more extreme state of fear than shaken.