Is there any source or explanation for the phrase「頭にきた」and why it means to be
angry?

For example:

> 彼の言ったこととその言い方にはイライラして頭にきた。

Why does "what he said and the way he said it came to my head" mean that I
should be annoyed or irritated? Why is 「頭」important and not something else? At
first glance, I thought that the phrase was similar to "気づく", but it is not.
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2012-11-07T17:41:25.597
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2012-11-08T10:06:58.763
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etymology set-phrases
Why does 「頭にきた」signify being mad at something?
This may not be the answer your looking for. But maybe if you're looking for
an easier way to remember that. We do have a phrase in English kind of like
that: "it got to me." If you tried to explain that, you'd run into the same
problem.
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2012-11-07T18:03:01.970
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2012-11-07T18:03:01.970
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answer
Perhaps the body is imagined as a vessel that can contain things, frustration
and anger being some of those things, and the theoretical limit is when we're
filled up to the head.
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2012-11-07T18:24:22.737
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2012-11-07T18:24:22.737
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answer
I think of it as blood rushing to my head when I am angry.
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2012-11-08T10:06:58.763
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2012-11-08T10:06:58.763
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answer