Losing one's ability to react calmly.
Losing one's rational thinking process and going berzerk.
Loss of all fundamental rationalization.
A situation that has lost all control.
The teacher opened Johnny's box and a frog jumped up at her sending her into a royal hyperspasm.
When Mark heard that his wife voted for Obama he had a hyperspasm attack in the parking lot.
Our current economy is suffering an unprecedented hyperspasm.