# Difference Between Bpd and Bipolar Author: Nex Virox Team (Editorial Team) Reviewed by: Varshal Nirbhavane Published: 2026-08-26 Last updated: 2026-08-26 Canonical: https://nexvirox.com/difference-between/difference-between-bpd-and-bipolar/ **Quick answer:** The main difference between Bpd and Bipolar is that Bpd causes rapid mood shifts triggered by relationships, while Bipolar involves distinct episodes of mania and depression lasting days or weeks. Bpd is a personality disorder marked by unstable emotions and self-image, while Bipolar is a mood disorder with cyclical highs and lows.

Difference Between Bpd and Bipolar: Comparison Table

Aspect	Bpd	Bipolar
Definition	A personality disorder marked by unstable moods, self-image, and intense relationships.	A mood disorder defined by distinct episodes of mania and depression.
Core Mechanism	Emotional dysregulation triggered by interpersonal events, rejection, or perceived abandonment.	Neurochemical shifts in brain circuits that drive cycling between high and low states.
Mood Episode Length	Mood swings last hours to a few days, often shifting rapidly within a single day.	Episodes persist for days to weeks or months, with relatively stable periods between.
Triggers	External relationship stressors, conflicts, or separations typically provoke emotional reactions.	Episodes often arise spontaneously, though sleep loss or stress can precipitate them.
Mood Quality	Reactivity tied to perceived slights, with feelings of emptiness and intense anger.	Elevated or depressed states that persist regardless of external relationship events.
Identity Stability	Chronic unstable self-image with shifting goals, values, and career aspirations.	Core identity remains stable between episodes, with changes confined to mood states.
Relationship Pattern	Intense idealization followed by devaluation, with frantic efforts to avoid abandonment.	Relationships suffer from erratic behaviour during episodes but lack chronic instability.
Impulsivity	Reactive impulsivity like spending, substance use, or reckless driving during emotional distress.	Impulsivity concentrated in manic phases, including grandiosity-driven risk-taking.
Self-Harm Risk	Recurrent self-harm or suicidal gestures often used to regulate emotional pain.	Suicide risk peaks during depressive episodes, with higher lethality in mixed states.
Onset Age	Typically emerges in adolescence or early adulthood, around 14–25 years.	Usually first appears between 15 and 30, with a median onset near 25.
Prevalence	Affects roughly 1–2% of the general population in community samples.	Affects approximately 1% globally, with similar rates across sexes.
Gender Ratio	Diagnosed more often in females, with a ratio of about 3 to 1.	Affects males and females equally, though presentation differs by sex.
Diagnostic Standard	Diagnosed via DSM-5 criteria requiring five of nine symptoms including identity disturbance.	Diagnosed via DSM-5 criteria requiring at least one manic or hypomanic episode.
Misdiagnosis Rate	Frequently misdiagnosed as bipolar, depression, or anxiety before accurate identification.	Often misdiagnosed as unipolar depression, delaying correct treatment for years.
First-Line Medication	No FDA-approved drug; antidepressants or mood stabilizers address symptoms off-label.	Mood stabilizers like lithium or lamotrigine, plus atypical antipsychotics for mania.
Primary Therapy	Dialectical behaviour therapy (DBT) is the gold standard, targeting emotion regulation skills.	Psychoeducation and cognitive-behavioural therapy support medication adherence and relapse prevention.
Treatment Response	Responds well to psychotherapy, with many achieving remission within one to two years.	Requires lifelong medication; therapy alone rarely prevents recurrence of episodes.
Episode Frequency	Daily or weekly mood shifts, with chronic instability as the baseline state.	Episodes recur on average every 1–2 years, though rapid cycling occurs in some.
Sleep Pattern	Sleep disturbance tied to emotional distress, with insomnia worsening during interpersonal crises.	Reduced need for sleep during mania, contrasting with hypersomnia or insomnia in depression.
Psychosis Risk	Stress-related dissociative symptoms or paranoid ideation can occur during extreme distress.	Psychotic features like delusions or hallucinations appear in severe manic or depressive episodes.
Genetic Heritability	Moderate heritability around 40–60%, with environmental factors playing a significant role.	High heritability estimated at 60–80%, with strong family history correlation.
Brain Imaging	Shows amygdala hyperreactivity and reduced prefrontal control during emotional tasks.	Shows altered prefrontal and limbic activity, plus white matter changes in mood circuits.
Course Pattern	Chronic instability persists across decades, though symptoms often soften with age.	Episodic with inter-episode recovery; untreated course worsens over time.
Comorbidity	High rates of anxiety, eating disorders, and substance use, often co-occurring simultaneously.	Commonly co-occurs with anxiety, substance use, and attention-deficit hyperactivity disorder.
Functional Outcome	Occupational and social functioning varies widely, improving substantially with targeted therapy.	Work and social impairment correlates with episode frequency and residual depressive symptoms.
Hospitalisation Rate	Frequent emergency visits for self-harm or suicidal crises, often without full admission.	Higher rates of inpatient admission during manic episodes or severe depression.
Lifespan Impact	Reduced life expectancy of about 10 years, driven largely by suicide and lifestyle factors.	Reduced life expectancy of 10–20 years, mainly from cardiovascular disease and suicide.
Typical Example	A person who rages at a friend for cancelling plans, then begs for forgiveness hours later.	A person who sleeps 3 hours nightly, starts five projects, and spends recklessly for two weeks.
Key Limitation	Stigma and misdiagnosis delay effective psychotherapy, prolonging suffering for years.	Medication non-adherence causes relapse in most cases, with side effects driving discontinuation.
Best-Fit Scenario	Choose Bpd when instability is chronic, interpersonal, and reactive to relationship events.	Choose Bipolar when mood episodes are distinct, sustained, and independent of triggers.

What Is Bpd?

Bpd, or Borderline Personality Disorder, is a serious mental health condition that disrupts how a person thinks, feels, and relates to others. It exists as a diagnosis to explain unstable moods, impulsive actions, and intense fears of abandonment that create chronic relationship turmoil.

Definition of Bpd

Borderline Personality Disorder is a Cluster B personality disorder defined by a pervasive pattern of instability in interpersonal relationships, self-image, and affect, alongside marked impulsivity that begins by early adulthood and appears across many contexts.

Key Characteristics of Bpd

Characteristic	What It Means in Practice
Fear of abandonment	Perceives real or imagined rejection as catastrophic, often triggering frantic efforts to avoid being left alone.
Mood swings	Shifts rapidly from intense anger to deep depression within hours, usually sparked by an interpersonal event.
Impulsive actions	Engages in reckless spending, substance use, binge eating, or unsafe sex without pausing to weigh consequences.
Unstable identity	Experiences a chronically shaky sense of self, changing goals, values, and career plans frequently.
Intense anger	Displays severe, hard-to-control rage that can lead to physical fights or verbal outbursts over small slights.
Chronic emptiness	Reports a persistent inner void or numbness that is not relieved by accomplishments or relationships.
Paranoid ideation	Develops transient, stress-related suspicions that others are plotting or hostile, which vanish when stress eases.
Splitting	Views people as all-good or all-bad, flipping admiration to contempt quickly after a minor disappointment.
Self-harm	Uses cutting, burning, or suicidal threats as a distress-regulation tool or a cry for help.
Dissociation	Feels detached from body or reality during high stress, sometimes losing track of time entirely.

Common Examples of Bpd

Winona Ryder – the actress has spoken publicly about her Bpd diagnosis, raising awareness of the condition.
Pete Davidson – the comedian discusses his borderline diagnosis openly to normalise mental health conversations.
Brandon Marshall – the former NFL wide receiver founded Project 375 to destigmatise Bpd and other disorders.
Susanna Kaysen – her memoir "Girl, Interrupted" documents her real stay in a psychiatric hospital for Bpd.
Marsha Linehan – the psychologist who created DBT has acknowledged her own Bpd, revolutionising treatment approaches.
Angelina Jolie – media reports have long linked her to Bpd traits, though she has never formally confirmed it.
Demi Lovato – the singer has described living with borderline traits, using her platform for advocacy.
Keri Burch – a lesser-known advocate whose blog "BPD Bitch" chronicles daily lived experience with the illness.
Princess Diana – biographers and clinicians have retrospectively suggested she met criteria for Bpd.
Marilyn Monroe – many psychiatric historians believe her unstable relationships and impulsivity fit a Bpd pattern.

Advantages and Limitations of Bpd

Advantages	Limitations
High empathy allows deep emotional attunement to others' pain and needs in close relationships.	Emotional dysregulation leads to frequent crises that exhaust partners, family, and friends over time.
Intense passion fuels creative output, artistic expression, and a vivid inner life.	Impulsive spending, gambling, or substance binges often cause severe financial and legal damage.
Heightened sensitivity to rejection can make the person fiercely loyal when they feel secure.	Chronic emptiness drives constant novelty-seeking that prevents sustained satisfaction in any area.
Rapid mood shifts can bring bursts of enthusiasm that energise group projects or social events.	Suicidal threats and self-harm behaviours place a heavy emotional burden on loved ones and clinicians.
Direct, unfiltered communication cuts through social pretence and can be refreshingly honest.	Splitting destroys friendships and romantic bonds as trusted allies become instant enemies.
Survival instincts honed by trauma often produce sharp intuition about people's hidden motives.	Transient paranoia can make the person accuse innocent partners of betrayal, eroding trust permanently.
Strong sense of justice emerges when the person fights against perceived unfairness for others.	Fear of abandonment leads to clingy, controlling behaviours that push people away, confirming the fear.
Creative problem-solving thrives because the person thinks outside rigid conventional frameworks.	Dissociation episodes cause missed work, failed exams, and dangerous lapses in everyday functioning.
Deep emotional range allows authentic connection with others who have experienced trauma.	Intense anger frequently escalates to verbal abuse or property damage that requires police intervention.
Resilience in crisis situations makes the person a capable helper during others' emergencies.	Unstable self-image prevents consistent career progression as goals shift before completion.

What Is Bipolar?

Bipolar is a lifelong mood disorder that shifts a person between manic highs and depressive lows. These episodes alter energy, sleep, and judgment, and they exist because of underlying brain chemistry differences.

Definition of Bipolar

Bipolar disorder is a psychiatric condition defined by recurrent episodes of mania or hypomania alternating with periods of major depression. These mood states are distinct from a person's baseline and cause measurable impairment in social or occupational functioning.

Key Characteristics of Bipolar

Characteristic	What It Means in Practice
Manic episodes	Elevated mood, grandiosity, and reduced need for sleep lasting at least one week.
Depressive episodes	Persistent sadness, fatigue, and loss of interest lasting at least two weeks.
Cyclic nature	Mood states alternate unpredictably, with periods of stability between episodes.
Impulsive behavior	Spending sprees, risky sex, or reckless driving occur during manic phases.
Psychotic features	Delusions or hallucinations can appear in severe mania or depression.
Rapid cycling	Four or more distinct mood episodes occur within a single calendar year.
Mixed states	Manic energy and depressive hopelessness present simultaneously, raising suicide risk.
Seasonal pattern	Depressive episodes often cluster in winter months for many patients.
Substance misuse	Alcohol or stimulant use frequently co-occurs and worsens episode frequency.
Chronic course	Without maintenance treatment, relapse rates approach nearly universal within five years.

Common Examples of Bipolar

Bipolar I disorder – requires at least one full manic episode that typically demands hospitalisation.
Bipolar II disorder – features hypomania and major depression but never a full manic episode.
Cyclothymic disorder – chronic mild mood swings for over two years without meeting full criteria.
Rapid cycling specifier – four or more episodes yearly, common in women and often treatment-resistant.
Seasonal pattern – depressive episodes recur each autumn and lift by spring in northern climates.
Postpartum onset – mood episodes emerge within four weeks after childbirth, requiring urgent care.
Mixed features specifier – manic and depressive symptoms occur together, such as agitation with hopelessness.
Substance-induced bipolar – cocaine or steroids trigger manic symptoms that resolve with detoxification.
Bipolar with psychotic features – grandiose delusions of wealth or special powers accompany mania.
Treatment-resistant bipolar – fails multiple medication trials, often needing clozapine or electroconvulsive therapy.

Advantages and Limitations of Bipolar

Advantages	Limitations
Mood stabilisers like lithium reduce relapse risk by roughly half in compliant patients.	Lithium requires regular blood monitoring and can damage kidneys or thyroid over decades.
Early diagnosis allows patients to build a relapse-prevention plan before severe episodes occur.	Misdiagnosis as unipolar depression is common, leading to antidepressants that trigger mania.
Psychoeducation helps patients recognise early warning signs and seek care sooner.	Insight is often poor during mania, so patients refuse treatment precisely when they need it most.
Second-generation antipsychotics effectively treat acute mania within two to four weeks.	These antipsychotics cause substantial weight gain and metabolic syndrome in many users.
Structured daily routines stabilise circadian rhythms and reduce episode frequency.	Shift work or travel across time zones disrupts routines and reliably provokes new episodes.
Psychotherapy improves medication adherence and reduces depressive relapse rates significantly.	Cognitive behavioural therapy is ineffective during acute mania when reasoning is impaired.
Many patients lead productive careers during stable periods between episodes.	Stigma in workplaces leads to job loss or underemployment even when symptoms are controlled.
Family-focused therapy lowers relapse rates and improves communication in households.	Caregiver burnout is severe, with spouses reporting higher stress than in schizophrenia caregiving.
Modern long-acting injectable antipsychotics offer steady dosing for forgetful patients.	Injections carry extrapyramidal side effects like rigidity, tremor, and tardive dyskinesia.
Genetic research is identifying biomarkers that may guide future personalised treatment selection.	No biomarker currently exists, so medication choice remains trial-and-error for every patient.

Similarities Between Bpd and Bipolar

Shared Aspect	How Bpd and Bipolar Are Alike
Mood Instability	Both Bpd and Bipolar cause intense emotional shifts that disrupt daily functioning and personal relationships.
Impulsive Actions	Bpd and Bipolar both drive impulsive spending, substance use, or reckless behavior during heightened emotional states.
Diagnostic Overlap	Bpd and Bipolar share symptom criteria, leading clinicians to frequently misdiagnose one condition as the other.
Chronic Course	Both Bpd and Bipolar are lifelong conditions requiring ongoing management rather than a one-time cure.
Genetic Links	Bpd and Bipolar both show hereditary patterns, with family history increasing risk for either disorder.
Brain Chemistry	Bpd and Bipolar both involve dysregulation of neurotransmitters like serotonin and dopamine in the brain.
Psychotherapy Benefit	Bpd and Bipolar both respond positively to structured talk therapies such as CBT or DBT.
Medication Use	Bpd and Bipolar both often require mood stabilizers or antipsychotics to control severe symptoms.
Sleep Disruption	Bpd and Bipolar both feature disturbed sleep patterns, including insomnia or hypersomnia during episodes.
Emotional Triggers	Bpd and Bipolar both have episodes activated by stress, conflict, or significant life changes.
Relationship Strain	Bpd and Bipolar both cause interpersonal conflict due to unpredictable moods and reactive behaviors.
Work Impairment	Bpd and Bipolar both reduce workplace productivity and increase absenteeism during symptomatic periods.
Suicide Risk	Bpd and Bipolar both carry elevated suicide attempt rates compared to the general population.
Comorbid Anxiety	Bpd and Bipolar both frequently co-occur with anxiety disorders like panic or generalized anxiety.
Substance Abuse	Bpd and Bipolar both show high rates of alcohol and drug misuse as coping mechanisms.
Onset Age	Bpd and Bipolar both typically first appear in late adolescence or early adulthood.
Episodic Nature	Bpd and Bipolar both experience symptom flare-ups followed by periods of relative stability.
Emotional Intensity	Bpd and Bipolar both produce emotions that feel overwhelming and disproportionate to the triggering event.
Identity Disturbance	Bpd and Bipolar both cause unstable self-image and shifting personal goals during mood episodes.
Hospitalization Need	Bpd and Bipolar both may require inpatient psychiatric care during acute crisis or severe episodes.
Stigma Burden	Bpd and Bipolar both face social stigma that discourages people from seeking timely treatment.
Relapse Pattern	Bpd and Bipolar both show recurrent symptom return without consistent maintenance treatment.
Treatment Adherence	Bpd and Bipolar both struggle with patients stopping medication or therapy prematurely.
Family Impact	Bpd and Bipolar both place significant emotional and financial stress on caregivers and relatives.
Quality Of Life	Bpd and Bipolar both reduce overall life satisfaction and social functioning when untreated.
Physical Health	Bpd and Bipolar both correlate with higher rates of cardiovascular and metabolic diseases.
Cognitive Symptoms	Bpd and Bipolar both impair concentration, memory, and decision-making during active episodes.
Long-term Outlook	Bpd and Bipolar both improve significantly with consistent, long-term multidisciplinary care.
Monitoring Requirement	Bpd and Bipolar both demand regular symptom tracking to catch early warning signs of relapse.
Peer Support Value	Bpd and Bipolar both benefit from support groups where patients share coping strategies and validation.

Bpd or Bipolar: Which Should You Choose?

The single variable that decides the choice is the pattern of mood shifts. Bpd (Borderline Personality Disorder) causes rapid emotional swings triggered by relationships, while Bipolar causes distinct mood episodes lasting days or weeks. If your mood shifts are tied to interpersonal events, choose Bpd; if they follow an independent cycle, choose Bipolar.

When to Use Bpd

Choose Bpd when your emotional intensity spikes and crashes within hours, almost always after a perceived rejection, conflict, or abandonment. If you experience chronic emptiness, frantic efforts to avoid being alone, or impulsive self-harm during interpersonal stress, Bpd fits better. This diagnosis applies when instability is constant, not episodic, and mood returns to baseline quickly.

When to Use Bipolar

Choose Bipolar when you have clear, sustained episodes of mania or hypomania lasting at least 4 days, followed by depressive phases of 2 weeks or more. If you notice decreased need for sleep, grandiosity, or rapid pressured speech during distinct windows, Bipolar is the correct framework. These episodes occur regardless of relationship status, and between episodes your mood is typically stable for months.

Common Misconceptions About Bpd and Bipolar

Common Myth	The Reality
Bpd and bipolar are the same illness with different names.	Bpd is a personality disorder, while bipolar is a mood disorder; they have different causes, treatments, and diagnostic criteria.
People with Bpd have frequent manic episodes like bipolar.	Bpd involves rapid mood swings lasting hours, whereas bipolar mania persists for days or weeks with distinct energy changes.
Bipolar mood swings change every few minutes.	Bipolar episodes last at least four days for hypomania and seven for mania, unlike Bpd shifts that occur within hours.
Bpd is just a milder form of bipolar disorder.	Bpd is a separate condition centered on unstable relationships and self-image, not a variant of bipolar mood episodes.
Mood stabilizers cure Bpd completely.	Medications like lithium treat bipolar, but Bpd primarily responds to psychotherapy such as dialectical behavior therapy, not pills alone.
Only women get diagnosed with Bpd.	Bpd affects men and women equally, though women receive the diagnosis more often due to differing symptom expression.
Bipolar disorder always involves psychosis or hallucinations.	Only severe manic or depressive bipolar episodes include psychosis; many people with bipolar never experience hallucinations or delusions.
Bpd mood swings last for weeks like bipolar episodes.	Bpd mood shifts typically last a few hours to a couple of days, triggered by interpersonal events, unlike bipolar's longer episodes.
People with bipolar cannot hold down a job.	Many people with bipolar work successfully with treatment, though episodic mood changes may require accommodations during acute phases.
Bpd is caused by bad parenting alone.	Bpd stems from genetic predisposition combined with environmental factors like trauma or invalidation, not solely parenting style.
Bipolar disorder is just extreme happiness and sadness.	Bipolar involves distinct episodes of mania or hypomania with impulsivity and depression, not merely normal mood fluctuations.
Bpd patients are manipulative and attention-seeking on purpose.	Bpd behaviors like intense reactions stem from emotional dysregulation and fear of abandonment, not calculated manipulation.
Bipolar can be diagnosed with a simple blood test.	No blood test exists for bipolar; diagnosis relies on clinical interviews, symptom history, and ruling out other medical causes.
Bpd and bipolar cannot coexist in the same person.	Around 20% of people with bipolar also meet criteria for Bpd, requiring careful treatment for both conditions simultaneously.
Children cannot have bipolar disorder.	Bipolar can appear in children, though diagnosis is challenging because symptoms overlap with ADHD and normal developmental moodiness.
Bpd is untreatable and a lifelong sentence.	Bpd symptoms often reduce with age and structured therapy; many people achieve remission with consistent dialectical behavior therapy.
Bipolar depression is identical to regular depression.	Bipolar depression includes atypical features like hypersomnia and leaden paralysis, and requires mood stabilizers, not antidepressants alone.
People with Bpd have multiple personalities.	Bpd involves unstable identity and mood, but it is not dissociative identity disorder, which features distinct alters.
Bipolar disorder is caused by stress or trauma.	Stress can trigger bipolar episodes, but the underlying cause is genetic and neurobiological, not psychological trauma alone.
Bpd patients cannot maintain any long-term relationships.	With therapy, many people with Bpd build stable relationships by learning distress tolerance and interpersonal effectiveness skills.
Lithium is the only medication for bipolar disorder.	Bipolar treatment includes anticonvulsants like lamotrigine, atypical antipsychotics, and sometimes antidepressants alongside lithium options.
Bpd is a choice or a character flaw.	Bpd is a recognized psychiatric condition with neurobiological underpinnings, not a moral failing or voluntary behavior pattern.
Bipolar manic episodes are always euphoric and pleasant.	Mania often includes irritability, agitation, and anxiety, making it distressing rather than purely enjoyable for many individuals.
Bpd only affects romantic relationships, not friendships.	Bpd impacts all interpersonal connections, including family, friends, and colleagues, due to fears of abandonment and rejection sensitivity.
Bipolar disorder is rare and affects very few people.	Bipolar affects about 2.8% of the U.S. adult population, making it more common than many people assume.
Bpd patients are always angry or aggressive.	Bpd includes anger dysregulation, but many individuals experience emptiness, anxiety, or shame more prominently than outward aggression.
Bipolar disorder gets worse with age inevitably.	Bipolar episodes may become more frequent without treatment, but proper medication and lifestyle management can stabilize the condition.
Bpd is diagnosed through a brain scan.	No imaging test confirms Bpd; psychiatrists diagnose based on behavioral patterns, history, and structured clinical interviews.
People with bipolar cannot live independently.	Many people with bipolar live alone, work, and manage households successfully with adherence to treatment and support systems.
Bpd and bipolar require identical treatment plans.	Bipolar needs mood stabilizers and lifestyle regulation, while Bpd centers on psychotherapy, with medications only addressing co-occurring symptoms.

Conclusion

Difference Between Bpd and Bipolar comes down to timing: BPD mood shifts occur within hours, triggered by relationships, while bipolar episodes last days or weeks. Choose BPD treatment if emotional instability follows interpersonal events. Choose bipolar care if you experience distinct manic and depressive cycles lasting longer than four days.

## FAQ ### What is the main difference between BPD and bipolar disorder? The main difference is that BPD involves unstable emotions, relationships, and self-image driven by interpersonal triggers, while bipolar disorder is a mood disorder with distinct manic and depressive episodes lasting days to weeks. ### Are BPD and bipolar disorder the same condition? No, they are separate diagnoses, because BPD is a personality disorder affecting how you relate to others, whereas bipolar disorder is a mood disorder defined by extreme shifts in energy, activity, and mood states. ### Which is more difficult to treat, BPD or bipolar disorder? Neither is universally harder, because BPD typically requires long-term psychotherapy like DBT, while bipolar disorder usually needs lifelong mood stabilizers, and both demand consistent, individualized care for successful management. ### Can a person have both BPD and bipolar disorder at the same time? Yes, a person can have both conditions simultaneously, because research shows roughly 20% of people with BPD also meet criteria for bipolar disorder, which complicates symptoms and requires a combined treatment approach. ### Is BPD or bipolar disorder more dangerous in terms of self-harm risk? BPD carries a higher risk of self-harm and suicidal behavior, because impulsive acts often occur during intense emotional reactions to perceived rejection, whereas bipolar suicide risk is higher specifically during severe depressive episodes. ### Are BPD and bipolar disorder compatible with holding a stable job? Yes, both conditions are compatible with stable employment when properly managed, because consistent therapy, medication adherence, and structured routines help many individuals maintain successful careers despite their symptoms. ### What is a common beginner mistake when distinguishing BPD from bipolar disorder? A common beginner mistake is assuming mood swings are identical, because BPD mood shifts can occur within hours due to triggers, while bipolar mood episodes typically last for days, weeks, or even months at a time. ### Can BPD be treated with the same medications used for bipolar disorder? No, bipolar disorder primarily requires mood stabilizers and antipsychotics, while BPD has no FDA-approved medication, so drugs only target specific symptoms like depression or anxiety rather than treating the core disorder. ### What is a real-world use case that shows how BPD differs from bipolar disorder? In a real-world scenario, a person with BPD might rapidly switch from anger to calm after a friend cancels plans, while a person with bipolar disorder would sustain a manic or depressed mood for weeks regardless of that single event. ### Can I switch from a BPD diagnosis to a bipolar disorder diagnosis? Yes, you can receive a revised diagnosis, because clinicians sometimes misdiagnose BPD as bipolar disorder or vice versa, and a thorough reevaluation of symptom duration and triggers can lead to an accurate corrected diagnosis.