“In clinical practice, many people receive treatment for individual symptoms without understanding the underlying pattern. A clear diagnosis often becomes the turning point, because it allows treatment to target the root of the problem rather than the symptoms alone.”

Niels Barends, MSc, psychologist at Barends Psychology Practice

Key insights about BPD diagnosis

• BPD symptoms often overlap with PTSD, depression, and bipolar disorder.
• A correct diagnosis is essential for choosing effective, evidence-based treatment.
• Misdiagnosis can lead to ineffective or delayed treatment.
• Structured therapies such as DBT and Schema Therapy are specifically designed for BPD.
• An early diagnosis improves long-term outcomes and emotional stability.

Not sure if your symptoms match BPD?

Start with a quick self-test or get a professional assessment for more clarity.

Navigate this topic:

• Understand borderline personality disorder
  What is BPD? •
  Symptoms explained
• Causes
  What causes BPD?
• Treatment and professional support
  Treatment options •
  Start online therapy
• Self-assessment and coping
  Take the BPD test •
  Coping strategies
• Relationships and daily impact
  Living with someone with BPD
• Additional insights
  BPD facts •
  Homepage

Clinical note: The DSM-5-TR criteria below are primarily used by mental health professionals during a structured assessment. They are included here to explain how diagnosis works in practice.

(A) Significant impairments in personality functioning

For a diagnosis of BPD, there must be clear problems in both self-functioning and interpersonal functioning.

• 1. Impairments in self-functioning
  Identity: a markedly unstable, poorly developed, or fragile self-image, often associated with excessive self-criticism, chronic emptiness, or dissociative states under stress.
  Self-direction: instability in goals, values, aspirations, or career direction.

AND

• 2. Impairments in interpersonal functioning
  Empathy: difficulty accurately recognizing the feelings and needs of others, often combined with interpersonal hypersensitivity and a tendency to feel insulted or slighted.
  Intimacy: intense, unstable, and conflicted close relationships marked by mistrust, emotional dependency, and strong fears of real or imagined abandonment. Relationships often shift between idealization and devaluation, or between overinvolvement and withdrawal.

(B) Pathological personality traits

In addition to impairments in personality functioning, the DSM-5-TR requires characteristic pathological personality traits in the following domains:

• 1. Negative Affectivity
  Emotional lability: unstable emotional experiences and frequent mood changes; emotions are easily triggered, intense, and often disproportionate to the situation.
  Anxiousness: intense nervousness, tension, or panic, especially in response to interpersonal stress; fear of uncertainty, loss of control, or “falling apart.”
  Separation insecurity: strong fears of rejection or separation from important others, often combined with dependency and fear of losing autonomy.
  Depressivity: frequent feelings of hopelessness, shame, worthlessness, pessimism, and in some cases suicidal thoughts or behaviour.

• 2. Disinhibition
  Impulsiveness: acting quickly in response to emotional triggers, without considering consequences; difficulty making or following plans; urgency and self-harming behaviour under distress.
  Risk taking: engaging in dangerous or self-damaging activities without sufficient regard for consequences or personal safety.

• 3. Antagonism
  Hostility: persistent anger, irritability, or frequent angry reactions, often in response to minor slights or perceived insults.

Additional DSM-5-TR requirements: these patterns must be relatively stable over time, present across different situations, not better explained by the person’s developmental stage or cultural background, and not primarily caused by substance use or a medical condition.

1. Marked impulsivity
   Difficulty delaying gratification or considering consequences, especially when emotionally distressed.
   Example: spending large amounts of money, binge eating, unsafe sex, or reckless driving after conflict or emotional overwhelm.
2. Severely unstable relationships
   Intense, chaotic relationships that shift rapidly between idealization and devaluation.
   Example: deeply admiring a partner one day and angrily rejecting them the next after a perceived slight.
3. Fear of abandonment
   Extreme sensitivity to real or perceived rejection or separation.
   Example: panicking when someone is late or does not respond quickly, sometimes leading to desperate attempts to keep them close.
4. Emotional instability due to reactivity
   Rapid and intense emotional responses, especially in interpersonal situations.
   Example: becoming intensely angry, desperate, or depressed for hours after a relatively minor disagreement.
5. Chronic feelings of emptiness
   A persistent sense of inner void, numbness, or lack of meaning.
   Example: feeling hollow or disconnected even when surrounded by others.
6. Poor self-image or unstable sense of self
   An inconsistent or unclear identity, including unstable goals, values, or self-worth.
   Example: feeling confident and purposeful one day, then worthless or directionless the next.
7. Intense or poorly controlled anger
   Difficulty managing anger, often out of proportion to the situation.
   Example: reacting with rage to mild criticism or feeling deeply insulted by small comments.
8. Stress-related paranoia or dissociation
   Under high stress, brief paranoid thoughts or dissociative symptoms may occur.
   Example: feeling unreal, detached, or as if observing yourself from outside after emotional overload.
9. Suicidal behaviour or self-harm
   Recurrent suicidal thoughts, suicide attempts, or deliberate self-injury, often in response to overwhelming emotional pain.
   Example: self-harming after a painful argument or after feeling rejected, in order to regain relief or control.

Feature	DSM-5-TR	ICD-11
Structure	Categorical + dimensional hybrid model	Fully dimensional model
Focus	Specific diagnostic criteria for BPD	General personality disorder + optional “Borderline Pattern”
Diagnosis	Requires specific traits + functional impairments	Requires personality disorder + ≥5 borderline traits
Severity assessment	Optional (Alternative Model)	Required (Mild / Moderate / Severe)
Clinical use	Commonly used in the U.S. and parts of Europe	WHO standard, used worldwide

In practice: Both systems describe the same core patterns of borderline personality disorder. The DSM-5-TR focuses more on specific symptom clusters, while the ICD-11 emphasizes severity and underlying personality traits. In clinical settings, professionals may use either system—or both—to guide diagnosis and treatment planning.

Get a Clear Diagnosis and Personalised Treatment Plan

If you recognize symptoms such as emotional instability or fear of abandonment, a structured assessment can help clarify what is going on.
At Barends Psychology Practice, we use both DSM-5-TR and ICD-11 frameworks to provide an accurate diagnosis and tailored treatment plan.

You don’t need to figure this out alone. A clear diagnosis is often the first step toward more stability, better relationships, and effective treatment.

Schedule a Free Consultation