Borderline Personality Disorder & Self-Harm in Teens

Published: 07/03/2026 | Updated: 07/03/2026

Authored by: Zachary Ehrmann, MSc

Edited by: Michael Fegan, B.A.

Self-harming can be incredibly distressing, both for the teenager experiencing it and for the parents who discover it. Borderline personality disorder (BPD) and self-harm are closely linked. Self-harm is one of the most common symptoms of BPD in adolescents, and for many teens, it becomes a way of coping with unbearable emotions.

Many teens hide self-harm because they feel scared or ashamed. Parents often find out by accident, and the discovery can be a huge shock. Knowing what drives the behavior makes it easier to respond without panic and get the help needed. This article will explore:

The connection between BPD and self-harm.
Borderline personality disorder symptoms in adolescents.
How emotional dysregulation leads to self-harm.
What to do during a teen mental health crisis.
What self-harm and BPD treatment for teens involve.

Connection Between BPD and Self-Harm

Teens diagnosed with borderline personality disorder (BPD) have much higher rates of co-occurring self-harm than those in the general teenage population. In fact, research suggests that the majority of adolescents diagnosed with BPD engage in some form of self-harming behavior. This makes it one of the most significant and telltale features clinicians look for when assessing the condition.^[1]

BPD is, at its core, a disorder of emotional regulation. Teens with BPD experience their emotions with intensity, speed, and volatility beyond what their peers go through. For example, a disappointment that most teens would be frustrated by can feel overwhelming for someone diagnosed with borderline personality disorder.

BPD also causes the emotional system in general to escalate faster, reach higher peaks, and take longer to come back down than it does for their peers.^[2] Where another teen may feel annoyed for ten minutes and then move on, a teen with BPD can continue to be upset for hours.

For many teens with BPD, self-harm becomes a way to regulate this overwhelming intensity. The physical sensations of self-harming can give them a temporary sense of relief and distraction, and a feeling of control when everything else feels out of control.

Self-harm in this context usually isn’t a suicide attempt, though the behaviors can be frightening, and self-harm and suicide can co-occur. It’s also rarely about manipulating others or attention-seeking behavior.^[3]

Most often, self-harm is a desperate and maladaptive attempt to cope with experiences that feel intolerable.

Borderline Personality Disorder Symptoms in Adolescents

Diagnosing the different types of BPD in teenagers can be harder than for adults, partly because some features overlap with normal teenage development. Things that can be typical to some degree during teen development include:

Identity exploration.
Emotional intensity.
Conflict with others.

Having said that, borderline personality disorder symptoms in teens tend to follow a pattern that’s pervasive and more intense than the usual teenage experience. The core features usually include:^[4]

An intense fear of abandonment by others, which can lead to extreme measures to avoid perceived separation.
Unstable, intense relationships that go back and forth between periods of idealization and devaluation.
Identity disturbance or an unstable sense of self that shifts depending on the context or relationship.
Impulsive behaviors, including substance use, reckless driving, binge eating, or unsafe sexual behavior.
Recurring self-harm or suicidal behavior, gestures, or threats.
Emotional instability, with episodes of depression, extreme irritability, or anxiety that can last for hours.
Feeling chronically empty, numb, or disconnected.
Stress-related paranoid ideation or dissociative symptoms.

While most teens experience some volatility during these formative years, a teenager with BPD experiences several of these patterns at the same time, interfering with their day-to-day functioning and relationships.

It is this severity and persistence that are the real difference. A teen without BPD may have an intense fight with a friend and feel bad about it for a day. A teen with BPD may feel like the friendship is destroyed forever, then feel like the friend is perfect again by the next morning, and cycle through this pattern repeatedly.

Emotional Dysregulation and Self-Harm

While emotional dysregulation is central to BPD, teenagers with post-traumatic stress disorder (PTSD), attention-deficit hyperactivity disorder (ADHD), depression, and anxiety can also experience it. Having difficulty noticing a feeling and tolerating its intensity can directly contribute to experiences of self-harming behavior.^[5]

From a neurological standpoint, self-harm provides an immediate disruption to escalating emotions. Physical pain activates a release of endorphins in the body. This can produce a sensation that can temporarily override emotional pain and create a controllable experience when something feels out of control.^[6]

The body’s response to physical pain can reduce the intensity of emotional pain, at least briefly. For a teen who feels like they are overwhelmed by emotion, this can provide a moment of relief.

For a teenager who’s learned that this works, the behavior then becomes reinforced with each repetition. This is why without appropriate treatment and intervention it tends to escalate in:^[7]

Frequency.
Intensity.
Severity.

What starts as occasional self-harm can become more frequent, and what starts as superficial injuries can become more serious. This escalation is one of the reasons early intervention matters.

Adolescent self-injury can also develop a social and relational aspect. A teen who engages in self-harm and receives concern from others may start to associate the behavior with connection and receiving care. This isn’t a manipulation; it is a learned association between self-harm and the attention that follows. If self-harm is the only time a teen feels truly seen or cared for, they may believe it’s the only way to get their needs met.

The goal of treatment is to widen the gap between the emotional trigger and the learned behavioral response of self-harm. Noticing an escalating emotion and tolerating it long enough to make a different choice can reduce the frequency and dependence on self-harm for teens with BPD and other mental health conditions. This takes practice and time, but it is possible.

Are You or a Loved One Struggling with anxiety, depression, or other mental health concerns?

Mission Prep is here to help you or your loved one take the next steps towards an improved mental well-being.

What to Do During a Teen Mental Health Crisis

A young person in extreme distress can be frightening for parents and loved ones. Having a framework for how to respond before the crisis arrives can help you feel better prepared to respond in an even and considered way.

In the Moment

The most important thing you can do during a teen mental health crisis is regulate your own response first. While it’s understandable to panic, expressing anger or extreme distress of your own will likely add to the overall emotional intensity. Your teen is already overwhelmed. If you become overwhelmed, too, the situation is likely to escalate.

Stay physically present and try to keep your voice calm and low. Don’t make any demands of your child, as this likely isn’t the time for questions about why this is happening or lectures about avoiding self-harm. This is hard. Everything in you may want to demand answers or make your child promise never to do this again. But in a crisis, none of that helps. It can wait.

A teen experiencing emotional dysregulation isn’t able to access the reasoning skills and communication that such conversations need. Keep the focus on safety and de-escalation.

If possible, remove access to medications, sharp objects, or other means of self-harm. You don’t need to make a big thing of this. Just quietly move things out of reach.

When to Call For Help

You can call or text 988, the national Suicide and Crisis Lifeline, any time a teenager expresses suicidal intent or makes an attempt. Texting 988 can be helpful for teens who struggle with phone calls, especially in a crisis. Trained counselors can help you both navigate the immediate situation and plan for safety.

Call 911 immediately if your child has made a suicide attempt, has harmed themselves in a significant way, or if you’re concerned about danger that you can’t manage in the home. You do not have to be certain that it’s an emergency. If you’re unsure, call.

After the Crisis Has Passed

Once things have settled down, it’s time to assess the best path forward. A single or first episode of self-harm doesn’t necessarily require something like hospitalization, but it should prompt an assessment by a professional to evaluate the risks and develop or review a plan of care.

Treatment is an ongoing process, not a single event. Stabilizing a crisis and getting the appropriate ongoing care are two different tasks, so it’s worth reaching out to a professional if your child isn’t currently receiving any treatment. The crisis response gets you through tonight. Treatment addresses the underlying issues, so there are fewer crises in the future.

Self-Harm and BPD Treatment

Effective self-harm and BPD treatment focuses on building new resilience and coping strategies for young people. Self-harm is ultimately a symptom of a larger issue. Treating self-harm within the context of borderline personality disorder has a strong evidence base.

Dialectical behavioral therapy, or DBT, was developed specifically for those struggling with emotional instability and self-harming behaviors.

DBT works on four primary skills to improve emotional dysregulation:

Improving distress tolerance to give teens new tools for experiencing powerful emotions without making them worse.
Emotional regulation to build their capacity to identify, understand, and regulate emotional states before they peak.
Interpersonal effectiveness, which touches on the relational patterns that generate emotional distress.
Mindfulness and awareness skills, increasing awareness to observe emotional states without immediately judging or acting on them.

Dialectical behavioral therapy is typically woven into individual sessions, group therapy, and a family component in treatment. Parents who participate in DBT sessions can also develop their own understanding of these skills and learn how to respond to their child’s distress more effectively. When the whole family learns DBT skills, the home environment becomes more supportive of recovery.

From a level of care standpoint, residential treatment can provide a structured place where these skills are practiced each day, with clinical support available for any potential crisis moments. For teenagers whose borderline personality disorder symptoms are severe enough that outpatient treatment isn’t likely to meet their needs, inpatient care can provide the support and stabilization needed to start the recovery process.

Residential mental health treatment removes the teen from their usual environment and offers round-the-clock support. This can be especially helpful when outpatient therapy hasn’t been enough, or when the home environment is contributing to the teen’s distress.

Find Mental Health Treatment Programs

Mission Prep provides treatment for teens experiencing various mental health conditions. Mental Health support is a phone call away – call 866-901-4047 to learn about your treatment options.

California Locations

See our residences in Southern California’s Los Angeles & San Diego areas.

Fallbrook - Limber Pine

Female identifying house with double occupancy rooms. Features large rooms, updated interior, & relaxing outdoor spaces with pool.

Rancho Palos Verdes - Martingale

Modern residential house for male teens where the they can focus on themselves in a relaxing atmosphere both indoor and outdoor.

Bonsall - Eagle Mountain

Male mental health residential house with double occupancy rooms. Secluded outdoor sanctuary with a pool and multiple outdoor spaces.

Rancho Palos Verdes - Oceanaire

Female indentifying house with indoor/outdoor living. Features warm and welcoming decor for a relaxing, healing centered.

Rancho Palos Verdes - Academic Center

Gender inclusive academic center that helps set calming, supportive atmosphere for teens focusing on their mental health and studies.

Rancho Palos Verdes - Harborview

Male indentifying house with double occupancy rooms with a warm, welcoming atmosphere where teens can focus on healing.

Rolling Hills Estates - Sunnyfield

Modern residential house for female teens. Features modern interior design & outdoor spaces create calm atmosphere.

Bonsall - La Reina

Female house with beautiful views and a light-filled relaxing atmosphere. Features a stunning pool and multiple balconies.

Virginia Locations

View our facilities in Loudoun County, VA within the DC metro area.

Waterford - Clover Hill

Female residential house set in rolling hills with secluded, relaxing atmosphere. Surrounded by light and nature.

Leesburg - Oak Bucket

Serene residential house for teen females. Beautiful indoor & outdoors spaces include a pool, multiple living spaces, and more.

Get Help for Teen BPD and Self-Harming Behaviors With Mission Prep Teen Treatment

If you or your teen is struggling with mental health issues, such as BPD and self-harm, support is available. Mission Prep Teen Treatment offers tailored treatment programs at various levels, including residential and outpatient mental health programs. Our expert, licensed clinicians employ evidence-based therapies and holistic care to help you and your family recover.

Our facilities are an important part of the treatment process at Mission Prep Teen Treatment. We believe it’s critical for teens to have a safe and welcoming environment where they can develop and practice the strategies they need to heal. Mission Prep Teen Treatment accepts insurance and is in-network with most major providers. We are happy to help you check your insurance coverage for mental health care.

If your child is dealing with self-harm and emotional instability, we’re here to help. Contact us online or call 866-901-4047 to learn more about how we can support your family. Our compassionate team is available 24/7 to answer your questions and provide guidance with no obligation.

"*" indicates required fields

Step 1 of 2

Verify Your Insurance

Patient’s First Name*

Patient’s Last Name*

Phone*

100% Confidential

No Commitment

Instant Results

BPD and Self-Harm in Teenagers FAQ

My teen says self-harm is the only thing that helps them. How do I respond to that?

You should take it seriously, but try not to argue with them. The goal of mental health treatment is to build new skills that work better and protect them from harm. Dismissing or minimizing what self-harm does for them in the moment can quickly close the conversation.

Should I remove sharp objects from the home?

Reducing access can be important, but it’s critical to do so with care. Removing objects that your child can use to harm themselves can reduce immediate risks, but it’s only one part of a broader plan. This should be co-created with your teen and a clinician to address the underlying issues. A therapist can help you decide what level of restriction makes sense for your teen’s specific situation.

Will my teen have BPD for the rest of their life?

Not necessarily. Research suggests that many young people diagnosed with BPD no longer meet diagnostic criteria after ten years, especially after receiving treatment.^[8] However, the recovery process can be lifelong, and learning new skills at a critical time is one of the best predictors of successful healing. Contact us today to learn more.