Manic depression is an older term for bipolar disorder. Borderline personality disorder (BPD) is a separate condition that shares surface-level symptoms with bipolar disorder. This is why they both get confused more often.
Both of these conditions involve mood changes, impulsivity, depression, and emotional instability. They differ in pattern, duration, triggers, and symptoms. Bipolar disorder causes distinct mood episodes that last days to weeks and represent a clear shift from a person’s usual functioning. BPD causes a long-term pattern of emotional reactivity that starts in early adulthood and persists across most situations.
These two conditions can also occur together. A comorbid diagnosis is common enough that clinicians actively screen for both when either one is suspected.
Bipolar Disorder vs BPD at a Glance
| Feature | Bipolar Disorder | Borderline Personality Disorder (BPD) |
| Core pattern | Distinct, episodic changes in mood and functioning | Persistent pattern of emotional, interpersonal, and self-image difficulties |
| Duration of mood changes | Manic episode: at least 1 week. Hypomanic episode: at least 4 days. Depressive episode: at least 2 weeks | Emotional shifts may last minutes to hours. The overall pattern is long-standing |
| Triggers | Mood episodes may occur without an identifiable trigger | Emotional shifts are often linked to interpersonal events |
| Mania or hypomania | Present in bipolar I or bipolar II disorder | Not a feature of BPD |
| Sleep and energy | Sleep, energy, and activity levels can change significantly during mood episodes | Sleep and energy fluctuate with emotional distress but are not characterized by distinct manic or hypomanic episodes |
| Relationships | Relationships may become strained during mood episodes but can be more stable between episodes | Relationships are often persistently unstable. Sometimes shifting between idealization and devaluation |
| Abandonment sensitivity | Not a core feature | It is a central feature and often involves intense fear of rejection or abandonment |
| Self-image | Generally stable outside mood episodes | Often unstable or shifts significantly over time |
| Impulsivity | More closely associated with manic or hypomanic episodes | Can occur across different situations and is not limited to mood episodes |
| Treatment approach | Often includes mood-stabilizing medication and psychotherapy | Psychotherapy is the primary treatment, with DBT being one commonly used approach |
What Is Manic Depression?
Manic depression is a mental health disorder that causes significant shifts in mood, behavior, energy, and activity level. The term Manic depression comes from two major types of episodes named mania and depression. It does not include hypomania or the longer-term mood changes seen in cyclothymic disorder. The DSM-5-TR uses the term bipolar disorder. This includes three main types given below:
- Bipolar disorder I
- Bipolar disorder II
- Cyclothymic disorder
Bipolar disorder causes significant changes in mood, energy, and activity that are more than normal ups and downs and can affect work, relationships, and daily life.
Manic Depression in Adolescents
Manic depression looks different in teenagers than it does in adults. During manic periods, teens show more irritability than euphoria. Their mood changes can sometimes be mistaken for typical teenage behavior. Bipolar disorder is not uncommon in adolescents. An estimated 2.9% of U.S. adolescents ages 13 to 18 have met criteria for bipolar disorder at some point in their lives, while 2.6% experienced severe impairment. Rates were also higher among female adolescents (3.3%) than male adolescents (2.6%) based on NIMH data from 2001 to 2004.
What Is BPD?
Borderline Personality disorder is a mental health condition that involves long-term patterns of emotional instability, self-image, relationships, and impulse control.
What Causes Bipolar Disorder and BPD?
Both bipolar disorder and borderline personality disorder (BPD) are influenced by a combination of biological and environmental factors. But the major differences are given below:
Bipolar Disorder: Genetics play a crucial role. If a close relative has the same disorder, the chances are higher for you as well. In addition to this, disrupted sleep patterns and high stress also trigger mood episodes, leading to this condition.
BPD: Childhood experiences such as trauma or an environment where emotions are completely neglected or punished can increase the risk. It also runs in families, so it can be transferred genetically. Life experiences play a major role in causing this condition.
What are the Symptoms of BPD and Bipolar Disorder?
Both conditions share many symptoms that cause confusion. But the major symptoms include the following:
Core Symptoms of BPD
- Intense emotional instability
- Fear of abandonment
- Unstable relationships
- Struggle with a shifting sense of self-image
- Impulsive behavior that includes binge eating, spending money, or substance use
- Chronic feelings of emptiness
- Self-harming thoughts
If you experience self-harming or suicidal thoughts, call or text 988, the Suicide and Crisis Lifeline
Symptoms of Bipolar Disorder
- Extreme irritability
- Energetic mood
- Reduced need for sleep
- Talking much faster and difficulty slowing down
- Difficulty in focusing
Early symptoms can overlap with anxiety, depression, and ADHD. This makes the condition difficult to recognize. A mental health professional can help assess the pattern and provide a personalized treatment plan.
Get Your Diagnosis Right with Orange Coast Psychiatry
Bipolar disorder and BPD need different treatment approaches. Orange Coast Psychiatry’s providers evaluate your symptom history and mood pattern to determine which condition fits or whether both conditions are present. Available in person in Anaheim and Chino Hills, or by telepsychiatry anywhere in California.
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How Do Mood Changes Differ in Bipolar Disorder and BPD?
Mood Patterns in Borderline Personality Disorder
BPD involves rapid emotional shifts that are often triggered by interpersonal events. These shifts occur within a broader pattern of difficulties with relationships or self-image. The mood can change from feeling calm to intensely distressed within hours after a conflict and perceived rejection.
Mood Patterns in Bipolar Disorder
It involves distinct mood episodes that present a clear change from a person’s usual functioning. It involves different episodes of mania, hypomania, or depression. Plus, cause changes in sleep, energy, and activity. Bipolar disorder is a combination of mood changes and changes in functioning.
How Are Bipolar Disorder and BPD Diagnosed?
A psychiatric evaluation for both conditions considers current symptoms, lifetime mental health history, and daily functioning. Our clinicians at Orange Coast Psychiatry look at the overall pattern. Rather than making a diagnosis based on how someone appears during a single appointment.
What Does a Psychiatric Evaluation Look At?
A complete psychiatric evaluation involves the following:
- Evaluate the current symptoms
- Timing, intensity, and frequency of mood changes
- Noticing changes in sleep patterns and energy levels
- The patterns of impulsive actions
- Identity and self-perception
- A family history of any condition
- Evaluating other mental health conditions
- Any stimulant use, thyroid or other related conditions
How Are Bipolar Disorder and BPD Treated?
Both conditions are treated with a combination of medications and psychotherapy. The treatment differs for both according to the specific needs of a person.
BPD Treatment
Treatment for Borderline personality disorder involves psychotherapy, with dialectical behavior therapy (DBT) the most studied approach. DBT focuses on four core skills that include the following:
- Mindfulness
- Distress tolerance
- Emotion regulation
- Interpersonal effectiveness.
Other evidence-based therapies, such as mentalization-based therapy and schema therapy, are also used depending on your condition. Medication is not a primary treatment for BPD itself. But psychiatrists prescribe it to target specific symptoms or treat co-occurring conditions when appropriate.
Bipolar disorder treatment
The treatment combines medication with psychotherapy. Mood stabilizers are used depending on the person’s symptoms and whether the goal is to manage mania, depression, or prevent future episodes. Atypical antipsychotics are also used for acute mania or long-term maintenance. Treatment may also address depressive symptoms directly when appropriate. Maintaining a regular sleep schedule, daily routine, and consistent treatment plan can further help reduce the risk of future mood episodes.
How Is Treatment Approached When Both Conditions Are Present?
Treating bipolar disorder and BPD together needs an individualized approach. Bipolar symptoms are managed with appropriate medication, while psychotherapy focuses on the longer-term patterns associated with BPD, such as emotional instability, impulsivity, and relationship difficulties. Ongoing monitoring helps psychiatrists distinguish mood episodes from BPD-related emotional shifts and adjust treatment when needed.
Can You Have Bipolar Disorder and BPD at the Same Time?
Yes. A person can have both disorders at the same time. However, having symptoms that overlap between the two conditions does not automatically mean someone has both. Each diagnosis requires a person to meet the full diagnostic criteria for that condition.
How Can Bipolar Disorder and BPD Co-Occur?
Research shows that bipolar disorder and BPD can occur together. A systematic review and meta-analysis found that BPD was present in 21.6% of people with bipolar disorder, while bipolar disorder was present in 18.5% of people with BPD Fornaro et al., 2016, Journal of Affective Disorders. These findings suggest that co-occurrence of these conditions is relatively common.
Why Does Identifying Both Conditions Matter?
A professional identification of these disorders can lead to an effective treatment plan. Bipolar disorder and BPD have different core patterns and treatment approaches, so recognizing both helps ensure that symptoms related to each condition are addressed rather than attributing everything to a single diagnosis.
Manic Depression and Paranoia
Paranoia involves intense suspicion that other people may want to harm, deceive, watch, or threaten you. In severe cases, these beliefs may become paranoid delusions, which are fixed beliefs that are not supported by evidence.
Manic depression sometimes involves paranoia during severe mood episodes. Psychotic symptoms, including paranoid delusions, occur during mania. But they are not present in every manic episode. One hospital-based study found psychotic symptoms in 24% of people with bipolar disorder, while psychotic features were reported in 27% of manic episodes. The delusions included grandiose, religious, and paranoid themes (Belteczki et al., 2017, Neuropsychopharmacologia Hungarica).
Bipolar Disorder or BPD? Get the Right Diagnosis with Orange Coast Psychiatry
These conditions need proper diagnosis instead of a quick screening. Our psychiatrist team at Orange Coast Psychiatry evaluates your condition and makes a treatment plan that aligns with your condition and goals. Get treatment in Anaheim or Chino Hills, California. We also offer flexible telepsychiatry appointments that you can get from the comfort of your home. We accept major insurance plans, including Aetna, Cigna, United Healthcare, and Medicare, so getting evaluated doesn’t have to mean starting from scratch financially.
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Key Takeaways
- Manic depression is the older name for bipolar disorder. The term was clinically changed as it did not address hypomania and cyclothymic disorders.
- Bipolar disorder causes distinct mood episodes while BPD involves ongoing emotional instability.
- Bipolar and borderline personality disorder can occur together
- Bipolar disorder includes psychotherapy and medication for treatment. BPD involves Dialectical Behavior Therapy (DBT)
