Self-Harm in Teens: A Guide for Parents

You found the marks on her arm when she pushed her sleeve up while reaching for something. Or maybe she told you herself, in a moment of something — relief, fear, need. Or you noticed a pattern of long sleeves in summer and eventually understood what it meant.

Whatever brought you to this article, the fear and the confusion you’re feeling right now are completely understandable. Parents who discover a teenager is self-harming often describe it as one of the most frightening moments of their child’s life. You need information, and you need it to be honest.

What Self-Harm Is (and Isn’t)

Self-harm in teenagers — typically cutting, though burning, scratching, or hitting are also common — is technically called non-suicidal self-injury (NSSI). That distinction is important. Most teenagers who self-harm are not trying to kill themselves. Statistically, the majority are doing something quite different: trying to cope with emotional pain that feels otherwise unmanageable.

That doesn’t make it safe, or something to minimize. It does mean the framework for understanding it is different from suicidal behavior, and getting the framework right matters for how you respond.

Self-harm tends to serve specific psychological functions. For many teenagers, it’s a way to convert internal, invisible emotional pain into something physical and visible. It’s a way to feel something when numbness has taken over. It can be a way to release an intensity of emotion that has no other outlet, a relief valve. It can be a way to self-punish during a period of intense shame. These are not reasons to approve of or normalize the behavior — they’re explanations that point toward what the teenager actually needs help with.

The behavior is also, to some degree, self-reinforcing. The physical sensation and the release of tension it provides create a cycle that can be difficult to break without developing alternative coping strategies.

How Common Is It?

More common than most parents realize. Research suggests that somewhere between 15 and 25 percent of adolescents have engaged in self-harm at least once, with higher rates among girls and among LGBTQ+ teenagers. It tends to begin in early to mid-adolescence, often between 12 and 15, though it can start earlier or later.

The fact that it’s relatively common doesn’t make it less serious. It does mean that if your teenager has been self-harming, they’re almost certainly not alone in their peer group, and the shame and secrecy that surrounds it can itself be a significant barrier to getting help.

Why Teenagers Self-Harm

There’s rarely a single clean explanation, but a few themes come up repeatedly.

Emotional regulation difficulties. Many teenagers who self-harm haven’t developed, or weren’t taught, effective strategies for managing intense emotional states. When the wave of emotion — shame, rage, grief, anxiety — becomes overwhelming, self-harm provides a rapid, reliable, effective way to reduce its intensity. The problem is that it works, in the short term, which is why it becomes a pattern.

History of trauma. A significant proportion of teenagers who self-harm have histories of adverse childhood experiences — abuse, neglect, household chaos, loss. Trauma affects the nervous system in ways that make emotional regulation harder, and it can create a chronic state of internal distress that feels unbearable without some form of relief.

Depression and anxiety. Both are strongly associated with self-harm. Depression often involves both intense pain and a numbed, disconnected quality — and some teenagers describe cutting as a way to feel something real when they otherwise feel nothing. Anxiety can reach levels of intensity where the physical pain of self-harm provides a kind of reset.

The social contagion factor. Self-harm can spread through peer groups, particularly friend groups where one person’s behavior influences others. Social media communities — some of which, despite platform policies, share content about self-harm — can also play a role in normalizing and spreading the behavior among vulnerable teenagers.

Feeling unseen. Some teenagers who self-harm describe it as the only way they know to show others how much pain they’re in. When words fail, or when no one seems to be noticing or responding to distress, the marks become a form of communication.

How to Respond When You Find Out

Your first reaction matters, but it doesn’t have to be perfect.

The impulse to panic is understandable, and your teenager knows that what they’re doing is going to upset you — which is often part of why they’ve hidden it. If you explode, express intense disgust, or respond with a tirade about how dangerous this is, you will likely close down the conversation and drive the behavior further underground. That doesn’t help anyone.

But you also don’t have to pretend it’s fine, or respond with artificial calm that your teenager can see through. What you’re going for is something more like: “I’m really worried about you. I love you. I need to understand what’s going on.” Not: “What were you thinking? Do you know how dangerous this is? How could you do this to yourself?”

Listen before you react. Ask questions before you give answers. “How long has this been happening?” and “What’s been going on for you?” are more useful than immediate problem-solving. Your teenager needs to feel that you can handle hearing the truth before they’ll tell it to you.

Avoid shaming. However frightened you are, avoid language that communicates disgust or disbelief. “How could you do this?” and “This is disgusting” close the door on honest conversation. Your teenager already likely feels a significant amount of shame about the behavior. Adding to that shame is unlikely to make them stop — it’s more likely to make them more secretive.

Don’t demand that they stop immediately without offering anything in its place. Self-harm is a coping mechanism — a problematic one, but a functional one. Telling your teenager to just stop, without helping them develop other ways to manage their emotional experience, is like telling someone who’s been using a crutch to throw it away and walk. They need something else first.

Take away access to means gradually and thoughtfully. This is appropriate and responsible, but do it in a way that’s collaborative when possible. Hiding every sharp object in the house in a dramatic sweep can feel like punishment rather than care, and it often motivates teenagers to find other methods.

Getting Professional Help

Self-harm in a teenager almost always warrants professional mental health support. A therapist who works with adolescents and has experience with self-harm can help your teenager develop the emotional regulation skills they’re missing, understand what’s driving the behavior, and create a safety plan.

Dialectical Behavior Therapy (DBT) has the most research support for treating self-harm. It was originally developed for adults with borderline personality disorder but has been extensively adapted for adolescents, often including a family component that helps parents understand and respond to the behavior more effectively. If a therapist recommends DBT or DBT-informed treatment, that’s a good sign they know what they’re doing with this population.

Depending on the severity and frequency of the self-harm, a higher level of care may sometimes be warranted. A therapist can help you assess that. If your teenager’s self-harm is escalating, if they’re hurting themselves severely or frequently, or if they’ve expressed suicidal thoughts, a more intensive assessment is appropriate.

The Difference Between Self-Harm and Suicidal Behavior

This is one of the most important distinctions to understand. Most self-harm is not a suicide attempt, but the presence of self-harm does increase suicide risk — not because the behavior itself is suicidal, but because the underlying distress and emotional dysregulation create vulnerability.

Ask your teenager directly whether they’ve had thoughts of suicide. As noted in other articles, asking this question doesn’t plant the idea. If they’ve been thinking about it, you need to know. If they haven’t, naming it directly gives them language and permission to come to you if they do.

Signs that you’re dealing with a suicidal crisis rather than self-harm as a coping strategy include: expressed desire to die, giving away possessions, saying goodbye, severe hopelessness, a more lethal method or wound than previous self-harm. If any of those are present, treat it as a crisis and seek immediate help.

Living with This

Parents of teenagers who self-harm often carry an enormous amount of their own distress — guilt, fear, helplessness, grief. You may be asking what you did wrong, or scanning your parenting for the thing that caused this.

Self-harm is rarely the result of a single parenting failure. It’s the result of a complicated combination of factors, many of which predate anything you did or didn’t do. Getting yourself some support — whether from a therapist of your own, from other parents navigating similar things, or from a family therapist who can help you respond effectively — is not a luxury. It’s part of what makes you able to keep showing up for your teenager.

Your teenager needs you to stay in this with them. Not to fix it overnight, not to pretend you’re not scared, but to stay.

This article is for educational purposes only and is not a substitute for professional mental health treatment. If you are experiencing a mental health crisis, please reach out to a qualified mental health provider or call 988.