REACH A CRISIS, come to a climax, reach a critical point, reach a crossroads; informal come to the crunch.
→ head
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phrasal2. of affairs : to reach a crisis or a point at which some new course, trend, or decision is inevitable and immediately required
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come to a head
To (cause to) reach a climax or crisis
● head
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reach a crisis
the violence came to a head with the deaths of six youths
abscesses should be allowed to come to a head
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bring sth to a ˈhead | come to a ˈhead idiom
if you bring a situation to a head or if a situation comes to a head, you are forced to deal with it quickly because it suddenly becomes very bad
Useful english dictionary. 2012.