get gray hair
get gray hair or get gray {v. phr.}, {informal}
To become old or gray from worrying; become very anxious or worried. — Often used with "over".
"If John doesn't join the team, I won't get gray hair over it," the coach said.
Naughty children are why mothers get gray.
Compare: GIVE GRAY HAIR.
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Source: A Dictionary of American Idioms