hit the panic button
US /hɪt ðə ˈpænɪk ˈbʌtn/
UK /hɪt ðə ˈpænɪk ˈbʌtn/
1.
to react to a situation with sudden, uncontrolled fear or alarm, often unnecessarily
:
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Don't hit the panic button just because the stock market dropped a little.
•
It's a small problem, no need to hit the panic button yet.