The phrase "put in a lather" refers to when someone becomes excessively worked up or agitated about a particular situation. There are several alternative phrases that can be used to convey a similar meaning. "In a tizzy" suggests a state of confusion or disorientation. "In a frenzy" implies an intense emotional or physical state that is difficult to control. "In a flap" suggests a sense of panic or distress. "In a stew" implies a state of worry or anxiety. Finally, "in a state" is a more general term for being in a heightened emotional state, and can be used to describe someone who is agitated, anxious or upset.