alt Hacker NewsNot OP. But respectfully disagree. Reads appropriate to me.
"Related to or marked by Hysteria" https://www.merriam-webster.com/dictionary/hysterical
Hysteria being "behavior exhibiting overwhelming or unmanageable fear or emotional excess" which seems to be exactly what OP was trying to say.
The origin of the word is a bit darker than its meaning, unfortunately. It comes from the Greek word for Uterus. You can kinda fill in the blanks from there as to how it came to its modern meaning.