Borderline Personality Disorder

If you or someone close to you has borderline personality disorder, you already know how overwhelming it can feel. Emotions hit hard and fast. Relationships can swing between closeness and conflict in a single conversation. And the way you see yourself may shift from day to day.

BPD has been misunderstood for a long time but the clinical picture today is much more hopeful than it was even 10 years ago. With the right treatment, most people with BPD see real improvement and many eventually no longer meet the diagnostic criteria at all. This is a condition that responds well to care.

This guide covers what BPD is, all 9 symptoms, how it shows up differently in women and men, what causes it, how doctors diagnose it, the treatments that work best and how to support someone who has it.

If BPD symptoms are affecting your daily life, Savant Care's psychiatrists and therapists provide same-week in-person and telehealth appointments for adults in California and Texas. Book a same-week appointment or call/text (866) 499-2588.

What Is Borderline Personality Disorder?

Borderline personality disorder is a mental health condition where the core problem is difficulty managing emotions. People with BPD feel emotions at high intensity and for longer than most people. When something upsetting happens, it takes much longer to calm back down.

Dr. Dakari Quimby, PsyD, Clinical Advisor at the New Jersey Behavioral Health Center, defines BPD by this central feature: "The defining feature of BPD is a dysfunction in emotional regulation. Persons with BPD experience emotions more intensely and longer than others, and this interferes with moving to the next emotion after a distressing event."

Dr. Michael Genovese, MD, Chief Medical Advisor at AscendantNY, puts it in even starker terms: "In BPD, 'moodiness' is not the problem; it is the neurobiological inability to regulate emotional intensity. It is like an emotional third-degree burn: the faintest social touch burns."

The name itself is outdated. In the 1930s, psychiatrist Adolph Stern used the word "borderline" because he thought these patients fell between neurosis and psychosis. That framing has long been abandoned but the name stuck. Some clinicians now prefer the term "emotional dysregulation syndrome," which more accurately describes the condition. What doctors now understand is that BPD is fundamentally about emotional dysregulation, not about being on the border of anything.

This emotional intensity spills into every part of life. It changes how people see themselves, sometimes from hour to hour, leading to shifting goals, values and sense of identity. It changes how they see others, making it hard to maintain steady friendships, family bonds and romantic relationships. About 1.4% of American adults have BPD, though many go undiagnosed or are misdiagnosed with depression, bipolar disorder or PTSD.

As Dr. Gregg Feinerman, FACS, Medical Director of Feinerman Vision, observes: "BPD is far misunderstood and tends to erase people by labeling them as a list of 'bad' behaviors." The reality is that BPD is a clinical condition rooted in neurobiology, not a character judgment.

Symptoms of BPD

The Diagnostic and Statistical Manual of Mental Disorders (DSM-5) lists nine symptoms of BPD. A person needs to show at least five of them, consistently and across different situations, to receive a diagnosis. Not everyone experiences the same combination, which is part of why BPD can look so different from person to person.

As Aleksey Aronov, AGPCNP-BC, Founder of VIPs IV, summarizes: "Borderline personality disorder is a mental health disorder where people have instability in their self-image, interpersonal relationships, emotions, and impulsive behavior, moments of very intense anger, chronic feelings of emptiness, fear of abandonment, and self-harm or suicidal behaviors."

Kiara DeWitt, Founder and CEO of Injectco and a Neurology RN, adds a neurological perspective: "The traits associated with BPD are, essentially, your brain handling stressful situations as if they are life threatening when they're not. For someone to be diagnosed with BPD they must exhibit 5 out of 9 traits according to DSM-V."

1. Fear of abandonment

A deep, often consuming fear of being left alone or rejected. This fear does not have to match what is actually happening. A delayed text or a canceled plan can set off panic. People may cling, plead, break up first to avoid being left or physically block someone from walking away.

2. Unstable relationships

Relationships tend to be intense and turbulent. A new friend or partner may feel perfect at first (idealization), then after a disappointment, that perception flips to anger or distrust (devaluation). This back-and-forth pattern, sometimes called "splitting," makes it hard to maintain consistent connections.

Joni Ogle, LCSW, CSAT, Chief Executive Officer of The Heights Treatment, notes that this is one of the hallmarks of the condition: "Relationships with BPD patients are particularly prone to instability and intense emotional highs and lows."

3. Unclear or shifting sense of identity

People with BPD often describe not knowing who they really are. Goals, career interests, personal values, and even sexual identity can shift suddenly. Some describe feeling like a different person depending on who they are with.

4. Impulsive, self-damaging behavior

To escape emotional pain or fill a sense of emptiness, people with BPD sometimes make quick, risky choices. This can include spending sprees, substance use, binge eating, reckless driving or unsafe sex. These actions usually feel urgent in the moment and regretful afterward.

5. Self-harm or suicidal behavior

Repeated self-harm (cutting, burning) and suicidal thoughts or attempts are common in BPD. Studies estimate that up to 10% of people with BPD die by suicide. This symptom requires immediate clinical attention.

6. Emotional instability

Mood swings in BPD are rapid and triggered by events, especially conflicts with other people. Unlike bipolar disorder, where mood episodes last weeks or months, BPD mood shifts can happen within hours. A person might feel intense anxiety or rage that peaks and fades the same day.

7. Chronic emptiness

Many people with BPD describe a persistent feeling of being hollow, bored or emotionally numb. This is not the same as sadness. It is more like an absence of feeling that makes it hard to find meaning or motivation.

8. Intense, inappropriate anger

Anger in BPD can seem out of proportion to the situation. It may come on suddenly and be difficult to control, leading to outbursts, sarcasm or physical fights. Shame and guilt often follow.

9. Paranoid thinking or dissociation under stress

When under heavy stress, some people with BPD have brief episodes of paranoia, such as believing others are out to get them. Others experience dissociation, feeling detached from their body, foggy or unreal. These episodes are usually short and pass once the stress eases.

How BPD Symptoms Differ in Women and Men

BPD has historically been diagnosed far more often in women, who make up about 75% of clinical diagnoses. But recent research suggests the actual prevalence may be closer to equal. The gap is more about how symptoms present and how doctors interpret them.

Women with BPD are more likely to turn emotional pain inward. They are more frequently diagnosed with co-occurring depression, anxiety, eating disorders, and self-harm. When women act on impulsive urges, it more often takes the form of self-injury.

Dr. Michael Genovese, MD, describes this divide vividly: "Females with BPD are likely to project their suffering through forms of self-harm, eating disorders or deep 'shame spirals.' Males are prone to externalize. BPD in men may often be misdiagnosed as intermittent explosive disorder, or as 'anger problems' because male emotional instability manifests as irritability, physical violence and/or risk-taking impulsivity."

Men with BPD tend to show outward symptoms: explosive anger, substance abuse, and physical fights. Because of this, doctors often mistake their BPD for other conditions like antisocial personality disorder or narcissistic personality disorder. The real issue, emotional dysregulation, gets missed.

Joni Ogle, LCSW, CSAT, elaborates on this diagnostic blind spot: "More women than men are diagnosed with BPD and tend to display internalizing symptoms. Internalizing refers to emotional pain being directed inward and not always visible to others. Women with BPD may experience depression, anxiety, mood instability, intense fear of abandonment and self-destructive behavior such as self-harm. Men with BPD more often display externalizing behaviors such as substance abuse, aggression and impulsive actions, which can lead to misdiagnosis as antisocial personality disorder."

Dr. Quimby confirms this pattern: "In females, the symptomatology is 'internalized' — that is, self-criticism, eating disorders, and/or self-harm — but in males, the symptomatology becomes 'externalized,' meaning physical aggression, irritability, drug use. These 'external' symptoms lead to males often being diagnosed with antisocial personality disorder or intermittent explosive disorder."

What Causes BPD?

There is no single cause. BPD develops from a combination of genetics, brain differences, and life experiences.

Dr. Michael Genovese, MD, describes it as "a sort of perfect storm of nature and nurture."

Genetics

If a close family member (parent or sibling) has BPD, your risk is higher. Twin studies suggest a strong hereditary component, though no single gene has been identified.

Kiara DeWitt, a Neurology RN and Founder of Injectco, puts a number to it: "Genetic studies have found that BPD has about a 40% to 60% heritability rate."

Aleksey Aronov, AGPCNP-BC, agrees that the origins are never purely genetic: "It is postulated that borderline personality disorder stems from an interaction between genetic factors and environmental factors such as bad childhood experiences, including many types of abuse and neglect."

Brain differences

Brain scans show that two areas work differently in people with BPD. The amygdala, which controls emotional reactions, tends to be overactive. The prefrontal cortex, which handles impulse control and logical thinking, tends to be underactive. This mismatch helps explain why emotions flare up fast and the calming part of the brain cannot keep up.

Dr. Genovese frames these structures in plain terms: "You have got a good deal of genetic vulnerability, mixed with neurobiological abnormalities in an area of the brain called the amygdala, or alarm center, and another area in the front of the brain, known as the brakes or prefrontal cortex."

Kiara DeWitt adds that the structural differences are measurable: "Brain scans have shown that there is less activity in the amygdala and frontal lobes of people diagnosed with BPD than those without the disorder. Interestingly enough, brain scans show that people with BPD have a smaller amygdala size and less connection between the amygdala and frontal lobe."

Childhood trauma and environment

Many people with BPD went through trauma as children: physical, sexual or emotional abuse, severe neglect or early loss of a parent. But trauma alone does not explain every case. Psychologist Marsha Linehan suggested that BPD can also start when a sensitive child grows up in a home where feelings are constantly brushed off, punished or made fun of. She called this an "invalidating environment." Over time, the child never learns how to name or manage their own emotions.

Dr. Quimby reinforces this framework: "These biological vulnerabilities tend to overlap with an 'invalidating environment' in childhood — such as exposure to trauma, neglect, or a household in which emotional expression was punished or dismissed."

Dr. Genovese adds: "That biological vulnerability compounded by an invalidating environment in childhood. If the child's emotional needs are neglected or the child is punished for expressing those feelings, it can lead to BPD."

Kiara DeWitt offers a developmental timeline: "Childhood trauma or invalidation tends to occur when a child is between ages 2–7 and the brain is developing their Prefrontal Cortex and limbic system." This window is critical because the emotion-regulating architecture of the brain is still being built during those years.

How Is BPD Diagnosed?

There is no blood test or brain scan for BPD. A mental health professional makes the diagnosis based on a detailed evaluation. This is usually a psychiatrist, psychologist or licensed clinical social worker who has worked with personality disorders before.

The evaluation involves a detailed talk about your symptoms, your personal and family history, and how your emotions affect your daily life. The clinician checks your experiences against the nine DSM-5 symptoms listed above. They also rule out conditions that can look similar, such as bipolar disorder, complex PTSD and major depression.

BPD is usually diagnosed in late adolescence or early adulthood, though symptoms often start in the teen years. As Kiara DeWitt notes: "BPD can be diagnosed when an individual is between 18–25 years old. Developmentally, this is the time when the brain begins to become fully mature." Some people go years being treated for depression or anxiety without much improvement. The real issue is that the personality disorder underneath was never identified.

If you suspect you may have BPD, a diagnostic evaluation is the first step. Savant Care offers comprehensive psychiatric evaluations with in-person and telehealth options for adults in California and Texas. Book an evaluation or call (866) 499-2588.

Conditions That Commonly Co-Occur with BPD

BPD rarely exists alone. The majority of people with BPD also meet criteria for at least one other mental health condition. Understanding this overlap matters because treating only one condition while missing the others leads to incomplete care.

The conditions that most often show up with BPD include major depression (affects up to 80% of BPD patients at some point), anxiety, PTSD, eating disorders, ADHD, substance abuse and bipolar disorder. Panic attacks and sleep problems are also common.

The overlap between BPD and bipolar disorder is one of the most common sources of confusion. Both involve mood swings but the patterns differ. In BPD, moods shift fast (hours, not weeks) and are usually set off by events with other people. In bipolar disorder, mood episodes last longer, often start without a clear trigger and include distinct manic or depressive phases. Some people have both.

BPD Treatment

Two decades ago, BPD was widely considered untreatable. That view has been proven wrong. Long-term studies show that with sustained treatment, the majority of people with BPD eventually achieve remission, meaning they no longer meet diagnostic criteria. Treatment takes time and consistency but the evidence for recovery is strong.

Therapy for BPD

Psychotherapy is the primary treatment for BPD. Standard talk therapy can help but several specialized therapies were developed specifically for BPD and have the strongest research support.

Aleksey Aronov, AGPCNP-BC, underscores this point: "Psychotherapy is typically the first-line treatment that people with borderline personality disorder should receive."

Dialectical behavior therapy (DBT)

Dialectical behavior therapy is the most studied therapy for BPD. Marsha Linehan created it in the 1990s. DBT teaches four core skills. Mindfulness helps you stay present without judging yourself. Distress tolerance helps you get through a crisis without making it worse. Emotion regulation helps you understand and calm intense feelings. Interpersonal effectiveness helps you ask for what you need while keeping relationships intact. A standard DBT program includes weekly one-on-one therapy plus a weekly skills group and usually lasts 12 to 18 months. Research shows that after one year of DBT, about 77% of patients no longer meet BPD criteria.

Multiple clinicians confirm that DBT is the treatment of choice. Dr. Dakari Quimby, PsyD, calls it "the gold standard treatment" and explains: "DBT combines cognitive-behavioural therapy with mindfulness and acceptance skills training in order to reduce distress and improve interpersonal effectiveness."

Dr. Genovese agrees: "Dialectical behavior therapy (DBT) is the gold standard. Patients are taught the skills they never learned: mindfulness, distress tolerance, emotional regulation."

Dr. Feinerman puts it in practical terms: "DBT or dialectical behavior therapy has been a game changer for many and usually takes anywhere from 6 months to a year to complete."

Mentalization-based therapy (MBT)

Mentalization-based therapy was developed by Peter Fonagy and Anthony Bateman. It helps you get better at understanding what you and other people are thinking and feeling, especially during stressful moments. People with BPD often lose this ability when upset. That can lead to jumping to conclusions about what others mean, which causes fights and breakups. MBT teaches patients to slow down, reflect and consider that their assumptions may be wrong.

Dr. Quimby describes MBT as another strong evidence-based option: "Mentalization-Based Treatment (MBT) is based on the concept of 'mentalization,' allowing the patient to un-learn problematic behaviour."

Schema-focused therapy

Schema-focused therapy targets deeply held beliefs — schemas — that formed in childhood and now drive unhealthy patterns. By identifying these core beliefs, you can learn to meet emotional needs in healthier ways. Schema therapy is typically a longer-term commitment, often lasting several years.

Dr. Quimby notes that schema therapy "allows the patient to modify long-term negative schemas" — the deep cognitive patterns that keep people locked into cycles of emotional distress and relationship difficulty.

Transference-focused psychotherapy

Transference-focused psychotherapy uses the relationship between patient and therapist as the main tool for change. By looking at how patterns from past relationships show up in the therapy room, patients build better awareness of how they connect with others.

Medication for BPD

No medication is FDA-approved specifically for BPD. In 2024, the American Psychiatric Association published updated treatment guidelines for BPD, the first update in over 20 years. The new guidelines stress that therapy should remain the main treatment. They also warn against prescribing too many medications at once, a common problem in BPD care.

That said, medication can play a supporting role. Doctors may prescribe antidepressants if you also have depression or anxiety. Mood stabilizers can reduce emotional swings. Low-dose antipsychotics may help with anger outbursts or brief paranoid episodes. Drugs like Xanax or Ativan (benzodiazepines) are usually avoided in BPD because they can make impulsive behavior worse and carry a risk of dependence.

How Savant Care Treats BPD

Savant Care treats BPD through in-person and secure telehealth care for adults in California and Texas. We combine psychiatric evaluation with therapy and medication management when needed. All patients also get free clinical Trauma-Informed Yoga sessions, which help with emotional regulation and body awareness. Each treatment plan is built around the patient's specific symptoms and goals.

Book a same-week appointment | Call or text (866) 499-2588 | View insurance coverage

How to Support Someone with BPD

If someone you care about has BPD, your support matters but it needs to come with firm boundaries. Without them, caregiver burnout is almost inevitable.

Joni Ogle, LCSW, CSAT, Chief Executive Officer of The Heights Treatment, captures the challenge well: "The families and loved ones of people with BPD often find their lives greatly affected by the many difficult issues associated with the disorder. Learning as much as possible about BPD, setting clear limits and communicating them effectively, and becoming involved in the treatment of their loved one can all greatly assist in lessening the burden of this difficult situation."

Validate their feelings

You do not need to agree with their behavior to acknowledge their pain. Something as simple as "I can see you are hurting right now" can de-escalate a crisis faster than trying to reason through it.

Dr. Genovese explains why this approach works: "If you have a person with BPD that you love, then the most radical thing is 'radical validation.' You do not have to agree with the logic, you do not have to 'sign off' on that emotion. You do have to 'sign off' on their experience. Stop trying to 'fix' the emotion and instead validate the experience."

Dr. Quimby echoes this: "Giving support involves giving as much empathy as one can while setting personal boundaries, without becoming a doormat. This might involve not agreeing with their logic, but just acknowledging that they are in emotional pain. This can de-escalate the intensity."

Set clear, consistent limits

People with BPD function better when they know what to expect. Decide in advance what behaviors you will and will not accept, communicate those boundaries calmly and hold them every time. Inconsistency feeds the cycle.

Dr. Feinerman reinforces why consistency matters: "The best thing you can do for your loved one is understand the disorder and know that their erratic emotions are part of the disorder. Patience and setting boundaries with them will help in the long run."

Learn the SET method

The National Education Alliance for BPD (NEABPD) teaches a way to talk to someone during an emotional crisis. It has three parts. Support: "I am here for you." Empathy: "I can see how much this hurts." Truth: "I cannot let you yell at me, so I am going to step into the other room." This structure helps you stay connected while protecting yourself.

Encourage treatment and get your own support

Gently encourage your loved one to stay in therapy. And find support for yourself, whether through a therapist, a support group like NEABPD's Family Connections program or trusted friends who understand the situation.

Aleksey Aronov, AGPCNP-BC, highlights a practical resource for families: "Family members can participate in psychoeducational programs that teach how to use empathy, how to communicate in a non-judgmental way, and how to avoid high expressed emotion. These programs can also teach skills for managing times of crisis and how to appropriately interact with family members who have BPD."

Joni Ogle adds that her own center offers this kind of structured support: "Family education for loved ones of people with a personality disorder is an option at The Heights Treatment Center in Houston, Texas." Similar programs exist across the country, and asking your loved one's treatment team about family education options is a strong first step.

When to Seek Professional Help

If you see five or more of the symptoms in this article in yourself and they have been there for a long time across different parts of your life, a professional evaluation is the right next step. You do not need a crisis to reach out. The earlier BPD is found and treated, the better.

Our psychiatrists and therapists at Savant Care have experience with personality disorders, mood disorders and trauma. We offer same-week in-person and telehealth appointments for adults in California and Texas.

Book a same-week appointment | Find a provider | Call or text (866) 499-2588

If you are in crisis or having suicidal thoughts, call or text the Suicide & Crisis Lifeline at 988 or go to your nearest emergency room. Help is available right now.

Frequently Asked Questions About BPD

Sources

• National Institute of Mental Health. Borderline Personality Disorder. nimh.nih.gov
• Keepers, G.A., et al. (2024). The APA Practice Guideline for the Treatment of Patients With Borderline Personality Disorder, Second Edition. American Journal of Psychiatry, 181(11).
• Chapman, J., et al. (2022). Borderline Personality Disorder: A Comprehensive Review. PMC. pmc.ncbi.nlm.nih.gov/articles/PMC10786009
• Zanarini, M.C., et al. (2012). Attainment and Stability of Sustained Symptomatic Remission and Recovery Among Patients with Borderline Personality Disorder. American Journal of Psychiatry, 169(5), 476-483.
• University of Washington Behavioral Research & Therapy Clinics. Dialectical Behavior Therapy. depts.washington.edu/uwbrtc
• Harvard Health Publishing. (2024). Dialectical Behavior Therapy: What Is It and Who Can It Help? health.harvard.edu
• Bateman, A. & Fonagy, P. The Role of Mentalization-Based Treatment. Tilburg University Repository
• Office on Women's Health. Borderline Personality Disorder. womenshealth.gov
• Psychiatry.org. What Is Borderline Personality Disorder? psychiatry.org