Self-harm & non-suicidal self-injury

The single most important thing examiners test here is a distinction: non-suicidal self-injury (NSSI) is not a suicide attempt. NSSI is deliberate, self-inflicted damage to body tissue without suicidal intent — cutting, burning, scratching, hitting. The person is not trying to die; they're trying to cope. Confusing the two leads to the wrong response, which is exactly why it's tested.

Functions — why people self-injure. The most common and most tested function is emotion regulation: NSSI relieves overwhelming emotional pain, tension, or numbness — it's a maladaptive way to feel better or feel something. Other functions: self-punishment, ending a dissociative/numb state (to feel real), communicating distress, and (less commonly) influencing others. Memorize emotion regulation as the primary function.

Assessment. Ask directly and non-judgmentally about method, frequency, severity/lethality, triggers, and function — and, critically, assess suicidal ideation separately, because NSSI and suicidality can co-occur and NSSI is a risk factor for future suicide attempts even though the intent differs. (Full suicide-risk assessment is its own topic in Domain 5 — here, just remember to screen for it whenever NSSI is present.)

Response principles. Stay calm, non-judgmental, and non-shaming; avoid punitive or coercive reactions. Validate the underlying distress while not reinforcing the behavior. Focus on identifying triggers and building alternative coping/emotion-regulation skills (a core target of DBT). Maintain safety, involve appropriate support, and refer/collaborate as needed.

Clinical Pearl: NSSI != suicide attempt — its most common function is emotion regulation (coping, not dying). But always assess suicidal ideation separately, because NSSI raises future suicide risk. Respond with a calm, non-judgmental stance and build alternative coping skills — never shame or punish.