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Non-Suicidal Self-Injury (NSSI): Understanding Self-Mutilation

Non-suicidal self-injury (NSSI) is the deliberate, self-inflicted damage to body tissue without suicidal intent. Preferred over "self-mutilation" (stigmatizing, implies disfigurement).

Common Methods

Cutting (arms, thighs, abdomen)
Burning, scratching, hitting, head-banging
Interfering with wound healing
Hair pulling (trichotillomania—separate diagnosis)
Ingestion of toxic substances (non-overdose)

Epidemiology

Onset: early adolescence (12–14 yrs)
Lifetime prevalence: 17% adolescents, 13% young adults, 5–6% adults
Higher in females (cutting); males (hitting, burning)
Strong association: BPD, PTSD, eating disorders, depression, anxiety, LGBTQ+ youth

Functions (Why They Do It)

Assessment & Safety

Always assess suicide risk separately (ideation, plan, means, intent).
NSSI increases future suicide attempt risk (habituation to pain/fear).
Evaluate frequency, severity, medical complications, triggers.

Evidence-Based Treatments

DBT (Dialectical Behavior Therapy): Gold standard—skills for distress tolerance, emotion regulation.
CBT: Cognitive restructuring, behavioral alternatives, exposure.
MBT (Mentalization-Based Therapy): For BPD.
Family therapy: Improve validation, reduce invalidation.
Medication: Treat comorbidities (SSRIs for depression/anxiety); no FDA-approved NSSI med.

Compassionate Response

Validate distress, not behavior. "I see you're in pain. Let's find safer ways to cope." Connect to specialist.

Poisoning - Related Articles

Function	Example
Emotion regulation	Relieve intense affect (anger, numbness, emptiness)
Self-punishment	Guilt, shame, perceived badness
Anti-dissociation	Grounding during depersonalization
Interpersonal influence	Communicate distress, seek care, set boundaries
Sensation seeking	Feel something vs. numbness