have a fit

listen to the pronunciation of have a fit
Englisch - Englisch
To experience an epileptic seizure

She needs to keep her sugar level low or she'll have a fit.

To become suddenly enraged

She'll have a fit when she finds out a younger woman got the job she was hoping for.

get very angry and fly into a rage; "The professor combusted when the student didn't know the answer to a very elementary question"; "Spam makes me go ballistic"
have a fit