He is being treated for a self-inflicted gunshot wound.

他因开枪自残正在接受治疗。

《柯林斯英汉双解大词典》

It was soon clear to me that the feeling, though, was self-inflicted.

不久我体会到那种感觉是她自己的切身感受造成的。

youdao

He cites Brazil's high Labour taxes and interest rates as self-inflicted handicaps.

他引用巴西的高劳动税和高利率作为自加之缚的例证。

youdao

In the last six months there have been natural disasters of epic proportion, but the worst disasters are man-made and causing self inflicted wounds.

FORBES: Goodbye Recovery, Hello Recession

New prisons and new wings are being built at a time when the number of self inflicted deaths has gone down this year compared to this time last year.

BBC: NEWS | UK | Can prison suicides be curbed?

It was a drag on our economy, and the kind of self-inflicted wound that we should not be self-inflicting here in Washington when we have so many challenges that we need to solve.

WHITEHOUSE: Press Briefing