Understanding the signs of BPD can be confusing, especially because many of its symptoms can look like ordinary emotional ups and downs. Everyone gets angry, feels rejected, has a bad day, or worries about relationships. The difference is often in the intensity, frequency, and impact these experiences have on a person’s daily life.
Borderline personality disorder (BPD) is a mental health condition that can affect emotions, relationships, self-image, and behavior. People with BPD may experience intense emotions, rapid mood changes, impulsive behavior, and a strong fear of being abandoned.
This guide explains the most common signs of BPD in easy English, what they can look like in everyday life, and when it may be a good idea to talk with a mental health professional.
Important: Having one or two of these signs doesn’t mean you have BPD. Only a qualified mental health professional can diagnose the condition.
What Is BPD?
BPD stands for borderline personality disorder. It is a mental health condition that can make it difficult to manage strong emotions and maintain a stable sense of self and relationships.
People with BPD don’t all experience the condition in exactly the same way. Some may struggle mostly with relationships, while others may have more difficulty with intense emotions, impulsive decisions, or feelings of emptiness.
According to the National Institute of Mental Health (NIMH), BPD can involve problems with emotional regulation, impulsivity, self-image, and relationships. Symptoms can vary in severity, frequency, and duration.
9 Common Signs of BPD
1. Intense Fear of Abandonment
One of the most common signs of BPD is an intense fear of being abandoned or rejected.
A person may become extremely worried that someone they care about is going to leave them—even when there isn’t clear evidence that this will happen.
For example, a delayed text message might lead to thoughts such as:
- “Are they angry with me?”
- “Did I do something wrong?”
- “Maybe they don’t want me anymore.”
- “They’re probably going to leave.”
This fear can sometimes lead to behaviors intended to prevent a person from leaving.
The fear of abandonment can be emotional and very real to the person experiencing it, even when the situation may seem small to someone else.
2. Unstable or Intense Relationships
Relationships can feel extremely intense when someone has BPD.
A person may feel deeply connected to someone one day and then suddenly feel hurt, angry, disappointed, or betrayed.
This doesn’t necessarily mean the person is pretending or being “dramatic.” Their feelings can genuinely change very quickly.
Relationships may sometimes shift between extremes, such as:
- Seeing someone as wonderful and perfect
- Feeling deeply disappointed by the same person
- Becoming afraid that the person doesn’t care
- Pulling away or ending the relationship
- Wanting the person close again
NIMH describes intense and unstable relationships as one of the common features associated with BPD.
3. Rapid and Powerful Mood Changes
Another important sign of BPD is experiencing emotions that feel unusually intense.
Someone may go from feeling happy to angry, anxious, ashamed, or deeply sad within a relatively short period.
These mood changes can last from a few hours to several days.
For example, a person might have a stressful conversation with a friend and suddenly experience:
- Strong anger
- Panic
- Sadness
- Shame
- Fear of rejection
Later, the person may feel much calmer and wonder why the emotion felt so overwhelming in the first place.
Everyone experiences mood changes, of course. With BPD, however, emotional reactions can be particularly intense and difficult to control.
4. An Unstable Sense of Self
People with BPD may struggle with how they see themselves.
Their goals, values, interests, or opinions about themselves can change significantly over time.
Someone might feel confident and capable one day and then suddenly feel worthless or like they don’t know who they are.
They may also struggle with questions such as:
- “Who am I?”
- “What do I actually want?”
- “What are my goals?”
- “What kind of person am I?”
NIMH identifies an unstable or distorted self-image as one of the signs associated with BPD.
5. Strong Feelings of Emptiness
Ongoing feelings of emptiness are another possible sign.
This can be difficult to explain because it isn’t always the same as ordinary sadness. A person may describe feeling hollow, disconnected, lonely, or as though something is missing.
They may try to fill that feeling through relationships, activities, food, spending, substances, or other behaviors.
The experience varies from person to person, but chronic emptiness is recognized as a symptom of BPD.
6. Impulsive or Risky Behavior
BPD can involve impulsive behavior, particularly during periods of intense emotion.
The person may act quickly without fully thinking about the consequences.
Examples can include:
- Excessive or sudden spending
- Reckless driving
- Binge eating
- Substance misuse
- Risky sexual behavior
- Gambling
- Suddenly quitting a job or ending something important
Not everyone with BPD experiences impulsivity in the same way, and having impulsive habits by itself doesn’t mean someone has BPD.
7. Intense Anger or Difficulty Controlling Anger
Another possible sign is anger that feels extremely strong or difficult to control.
This may involve frequent arguments, shouting, resentment, irritability, or feeling furious over situations that others might consider minor.
Some people may express their anger openly. Others may keep it inside and experience intense frustration or bitterness.
The important point is that the problem isn’t simply “getting angry.” Anger is normal. With BPD, anger can be unusually intense and may create serious problems in relationships or everyday life.
8. Feeling Disconnected From Yourself or Reality
Some people with BPD experience periods of dissociation, particularly during stressful situations.
Dissociation can feel like being disconnected from yourself or your surroundings. Some people describe it as feeling like they’re watching themselves from outside their body or that the world around them doesn’t feel completely real.
Stress-related suspicious thoughts or temporary changes in perception can also occur.
These experiences can be frightening, especially when someone doesn’t understand what’s happening.
9. Self-Harm or Suicidal Thoughts
Self-harm and suicidal thoughts are among the most serious possible signs associated with BPD.
Some people may hurt themselves as a way of coping with overwhelming emotional pain. Others may experience suicidal thoughts or behaviors, particularly during periods of intense distress.
This should always be taken seriously.
If you or someone you know is in immediate danger, has seriously harmed themselves, or is thinking about suicide, seek emergency help or contact a local crisis service immediately. In the United States, you can call or text 988 for the Suicide & Crisis Lifeline.
What BPD Can Look Like in Everyday Life
BPD isn’t always obvious from the outside.
Someone may appear confident at work or school while privately struggling with overwhelming emotions. Another person may seem calm most of the time but experience intense distress when they feel rejected.
Common difficulties can include:
- Frequent relationship conflicts
- Strong reactions to perceived rejection
- Difficulty calming down after an upsetting event
- Sudden changes in goals or self-image
- Acting impulsively during emotional moments
- Feeling empty or disconnected
- Problems with anger
- Self-harm or thoughts of suicide
The combination and severity of symptoms matter more than any single behavior.
Signs of BPD vs. Normal Emotional Ups and Downs
It’s important not to diagnose yourself based on an online checklist.
Everyone can experience:
- Mood swings
- Anger
- Jealousy
- Relationship problems
- Fear of rejection
- Impulsive decisions
- Low self-esteem
What may distinguish BPD is a longer-lasting pattern of difficulties that significantly affects relationships, emotions, behavior, self-image, or daily functioning.
Other conditions can also cause symptoms that overlap with BPD, including depression, anxiety, bipolar disorder, PTSD, ADHD, substance-use disorders, and eating disorders.
That’s one reason professional assessment matters.
How Is BPD Diagnosed?
There isn’t a simple blood test or online quiz that can confirm BPD.
A qualified mental health professional typically looks at a person’s symptoms, personal history, relationships, behavior, and overall mental health. They may also consider other conditions that could explain similar symptoms.
If you’re concerned about yourself, consider talking with a doctor, psychologist, psychiatrist, or another qualified mental health professional.
You don’t need to have every possible symptom before asking for help.
Can BPD Be Treated?
Yes. BPD is treatable, and many people improve with appropriate support and treatment.
Psychotherapy, or talk therapy, is a major part of treatment. One approach often used for BPD is dialectical behavior therapy (DBT). It can help people develop skills for managing intense emotions, reducing harmful behaviors, handling stress, and improving relationships.
Other forms of therapy may also be helpful depending on a person’s needs.
The most important thing to remember is that having BPD doesn’t mean someone is destined to have unstable relationships or overwhelming emotions forever. With appropriate treatment and support, people can learn healthier ways to cope and build more stable lives.
When Should You Get Help?
Consider speaking with a mental health professional if emotional or relationship difficulties are:
- Happening repeatedly
- Difficult to control
- Affecting work, school, or relationships
- Causing significant distress
- Leading to risky or impulsive behavior
- Making you feel persistently empty or disconnected
- Leading to self-harm or thoughts of suicide
You don’t have to wait until things become a crisis. Getting help early can make it easier to understand what’s happening and find useful ways to cope.
Conclusion
Recognizing the signs of BPD can be a useful first step toward understanding yourself or someone you care about. Common signs can include intense fear of abandonment, unstable relationships, rapid mood changes, an unstable sense of identity, chronic emptiness, impulsive behavior, intense anger, dissociation, and self-harm or suicidal thoughts.
But an important point gets lost when people rely too heavily on online symptom lists: a symptom isn’t a diagnosis.
If several of these experiences are affecting your everyday life, talking with a qualified mental health professional is a much better next step than trying to diagnose yourself from a search result. And if you’re struggling with self-harm or suicidal thoughts, please seek immediate professional or emergency support.
BPD can be difficult, but it is not hopeless. Effective treatments are available, and many people learn to manage their symptoms and build healthier, more fulfilling lives.
FAQs About the Signs of BPD
What are the most common signs of BPD?
Common signs include intense fear of abandonment, unstable relationships, rapid mood changes, an unstable sense of self, chronic feelings of emptiness, impulsive behavior, intense anger, dissociation, and self-harm or suicidal thoughts. Not everyone experiences all of these symptoms.
Can you have BPD without having every symptom?
Yes. People with BPD can experience different combinations and levels of symptoms. Symptoms also vary in severity and frequency, which is why a professional assessment is important.
Is BPD the same as bipolar disorder?
No. They are different mental health conditions, although some symptoms can overlap. For example, both can involve mood changes and impulsive behavior. A mental health professional can help determine which condition—or combination of conditions—best explains someone’s symptoms.
Can BPD get better?
Yes. Treatment can help people manage symptoms, improve relationships, reduce harmful behaviors, and improve quality of life. Psychotherapy is a primary treatment, and DBT is one therapy specifically developed for BPD.
Can BPD symptoms look different from person to person?
Absolutely. BPD doesn’t look exactly the same in everyone. One person may struggle mainly with relationships and abandonment fears, while another may experience more impulsivity, anger, emptiness, or self-image problems.
Should I diagnose myself using a list of BPD symptoms?
No. Online information can help you recognize patterns worth discussing with a professional, but it can’t confirm a diagnosis. Several other mental health conditions can have similar symptoms. A qualified professional can evaluate the full picture.
