What NSSI is
Non-Suicidal Self-Injury (NSSI) = intentional damage to your own body without suicidal intent. Most common forms: cutting with knives / blades, burns, head-banging, scratching, biting, etc. DSM-5 lists it as a "condition for further study" (NSSI Disorder, 2013). Not yet an official diagnosis, but an important clinical concept.
Korean NSSI data
- Adolescents (10~19): 9% overall, 12% female, 6% male
- 20s: 5%
- 30s+: 2~3%
- Onset: peak 12~14 years
- Trend: 2010~2020 — Korean adolescent self-harm ER visits tripled
- Korean specifics: exam pressure, SNS, exposure to online self-harm content, celebrity self-harm reporting
Self-harm ≠ suicide — key distinction
Often confused but different:
- NSSI: to live, emotion regulation, NOT ending pain
- Suicide: to die, ending
- NSSI methods: surface (arms, legs, abdomen) — cutting, burning
- Suicide methods: drugs, hanging, falls, lethal means
- NSSI frequency: repetitive (monthly to daily)
- Suicide attempts: one to a few
But NSSI risk: self-harmers have 5× the suicide risk of the general population. Self-harm may be "rehearsal" or "lethality learning" for suicide. "It's nothing" is the wrong response — needs medical evaluation.
Why people self-harm — 4 functions
① Emotion regulation (most common): surfacing intense sadness, anger, anxiety, emptiness as physical pain. Physical pain temporarily masks emotional pain. After self-harm, 30 min~hours of "relief". Then 1~2h later, guilt / shame ↑ → bigger urge → cycle.
② Self-punishment: thoughts of "I'm worthless, I deserve punishment". Self-harm = self-punishment act.
③ Emotion expression / communication: putting unverbalized pain into the body. A message to family / friends "I'm hurting" (indirect, not direct).
④ Dissociation / reality contact: from a numb state, confirming "I'm alive". Common in trauma patients.
The above 4 account for 90% — self-harm isn't "crazy" or "weird", it's a functional behavior. But a dangerous coping mechanism.
Warning signs — for parents, teachers, friends
- Long sleeves / pants even on hot days (hiding marks)
- Cut / burn marks on arms, legs, abdomen
- Blood, bandages, knives, razors frequently seen
- More time alone
- Depression, irritability, anger
- Cutting off friends
- Academic decline
- Searching / posting self-harm content on SNS
- Saying "I wish I disappeared"
3+ signs = psychiatry immediately, 1577-0199. Not "discipline" but "treatment".
For the self-harmer — 5 replacement tools
Use immediately when an urge arises:
① Ice Hold: hold ice in your hand for 30~60 seconds. Intense cold mimics physical pain — ↓ urge. No marks, safe. Most effective, evidence-based.
② Rubber band snap: rubber band on the wrist, snap it. Small pain ↓ urge. Wear it daily.
③ Intense exercise: 20 min brisk walking / running / push-ups immediately. ↑ endorphins, ↓ cortisol. Body activation shifts emotion.
④ Art / expression: draw the urge with red marker on paper, tear it. Writing, journaling. Externalize emotion safely.
⑤ Reach out: urge → call a friend, family, or 1577-0199 immediately. If you can endure 5 min, the urge drops. Never alone.
+ extras:
- Cold shower
- Strong scent (coffee, mint, ginger)
- 5 min under a blanket
- Hold a pet
Parent / family emergency manual — when self-harm is discovered
First 24 hours:
① Stay calm: your shock is OK — but don't explode in front of the child. "Why did you do this!" / "I can't believe it" → ↑ child guilt → bigger self-harm risk.
② Safety check: does the wound need stitches (depth / length)? ER. Surface wounds: disinfect, bandage. Lock up dangerous items (knives, razors, meds) immediately.
③ Emotional expression: "I didn't realize you were hurting this much. I'm sorry. I want to listen". Don't say "stop" / "never again" (zero effect, ↑ guilt).
④ Go to psychiatry together: within 24~48 hours. The child doesn't get a vote — mandatory. "Let's get treatment".
⑤ Notify the school: tell the school counselor / homeroom teacher (privacy + support).
Ongoing care:
- Weekly psychiatric outpatient visits
- Family therapy
- Remove or lock dangerous items (knives, medications) at home
- Monitor the child's SNS (self-harm content)
- School / friend support network
- Parents' own mental health (PHQ-9, therapy if needed)
Friend / partner emergency manual
① No blaming: not "why" / "crazy". Validate "you must have been hurting".
② Don't promise secrecy: even if asked to keep it secret, don't. Your friend's life > the promise.
③ Connect to a trusted adult: parent, school counselor, psychiatry. Tell the friend directly "you need outside help" and go with them.
④ Emergencies: deep wound / suicidal thoughts = call 112 / 119 immediately or accompany to ER.
⑤ Care for yourself: a friend's self-harm can be traumatic for you. Get your own counseling / support.
Treatment — DBT first
DBT (Dialectical Behavior Therapy): first-line for NSSI. Developed by Marsha Linehan for BPD, validated for NSSI. 4 skills:
- Mindfulness: recognize and accept emotions
- Distress tolerance: endure strong emotions (without self-harm)
- Emotion regulation: ↓ emotional intensity skills
- Interpersonal effectiveness: relationship skills
24 weeks ~ 1 year, group + individual. Some Korean university hospitals (SNUH, Severance, etc.) offer adolescent / adult DBT.
Medication: SSRI / SNRI for comorbid depression / anxiety / BPD. No specific NSSI drug.
CBT: self-harm diary, trigger analysis, alternative-behavior learning.
Inpatient: when suicide risk ↑ or severe self-harm. Korean adolescent / adult psychiatric hospitals.
Korean SNS-related self-harm risk
↑ self-harm content sharing on SNS / online communities. 30% of Korean adolescent self-harm is first learned via SNS. Searching "self-harm photos" or "self-harm methods" → starts self-harm. Parents should monitor children's SNS:
- Block self-harm hashtags on Instagram, Twitter, Tumblr
- Check the phone's search history (if suspect)
- Have conversations about content the child sees (not censorship — understanding)
- Expose to positive content (recovery stories, help)
- 2+ weeks of self-harm content exposure → psychiatry
Emergency signs — get help now
- Suicidal thoughts or attempts
- Deep wound (heavy bleeding, stitches needed) → ER
- ↑ self-harm frequency (daily, worsening)
- Drugs / alcohol + self-harm
- Finding another person (child, partner) self-harming
- You can't stop self-harming (after 1 week of trying)
1577-0199 / 112 / ER. NSSI isn't "weak will" — a treatable symptom. DBT + time + family support can reach "no self-harm" within 1~3 years. Self-harming isn't your fault — you need to learn emotion-regulation tools.
