Typically intransitive/reflexive: to self-harm.
He began to self-harm after the breakup.
После расставания он начал самоповреждаться.
Attributive use; mainly in noun phrases such as self-harm behaviour.
The clinic launched a self-harm prevention campaign.
Клиника запустила кампанию по предотвращению самоповреждающего поведения.