Self-harm is sometimes described as behaviour that happens without suicidal intent. That can be true for many people, but it is too narrow to use as a general definition.
Current NICE guidance defines self-harm as intentional self-poisoning or injury, irrespective of the apparent purpose. In other words, the definition does not decide in advance why somebody harmed themselves or what outcome they intended.
Suicide is specifically connected with an intention to die. Self-harm can happen without that intention, alongside suicidal thoughts or in circumstances where the person's intention is difficult to separate neatly into one category.
Self-harm does not automatically mean someone wants to die
For many people, self-harm is a way of coping with distress rather than an attempt to end their life. It may help somebody manage overwhelming emotions, express something they find difficult to put into words, regain a sense of control or respond to other painful experiences.
That is one reason it can be unhelpful to assume that every act of self-harm is a suicide attempt. The behaviour may have a very different meaning for the person.
But the opposite assumption can also be dangerous. Self-harm and suicide are connected, and somebody who self-harms may also experience suicidal thoughts or become at greater risk at another point in time.
Intent is not always simple
It can be tempting to think there is a clear dividing line: self-harm on one side and suicidal behaviour on the other.
Real experiences can be more complicated.
Someone may be clear that they did not want to die. Another person may feel uncertain about what they wanted to happen. Intent can also change over time or even during a single episode of self-harm.
For some people, the distinction between an act of self-harm and a suicide attempt may therefore be difficult to make from the outside. The appearance or seriousness of an injury cannot tell us everything about what somebody was thinking or feeling.
The safest starting point is not to assume
Self-harm should not be treated as proof that somebody is suicidal, or as proof that suicidal intent is absent. Understanding the person's own experience and keeping safety in mind matters more than applying a label from the outside.
Why the connection still matters
Although many people who self-harm do not intend to die, self-harm is associated with increased risk of suicide. That connection is important without turning it into a prediction about any individual person.
A history of self-harm cannot tell us that somebody will attempt suicide. Equally, describing self-harm as a coping strategy should not lead us to dismiss concerns about suicide when they arise.
This is why Scotland's self-harm strategy is closely linked with suicide-prevention work while still treating self-harm as a subject that needs its own understanding and response.
What this means in a conversation
When somebody tells us they have self-harmed, the first task is not to decide which label fits them.
Listening without judgement can help us understand more about what has happened, what the person is experiencing and what support may be appropriate. It also leaves room to take concerns about safety seriously rather than making assumptions in either direction.
There may be situations where professional, specialist or urgent help is needed. Recognising that possibility does not mean treating everyone who self-harms as suicidal. It means keeping both compassion and safety in view.
A clearer way to think about the difference
Self-harm describes intentional self-poisoning or injury without assuming the purpose behind it. Suicide is specifically about intentionally ending one's life.
The two can overlap, but they are not interchangeable.
For mental health awareness training, that distinction matters because a useful response begins with curiosity, listening and attention to safety, not with deciding what somebody must have meant from the behaviour alone.
