Borderline Personality Disorder (BPD) is a mental health condition that affects how a person experiences emotions, relationships, and their sense of self. People with BPD often feel emotions intensely and quickly, which can make day-to-day life feel overwhelming during stress or conflict.

At Eastern Suburbs Psychiatry, our psychiatrists provide assessment and treatment for borderline personality disorder in adults from our Darlinghurst clinic in Sydney.  With appropriate support and treatment, many people with BPD experience significant improvement in emotional regulation, relationships and overall functioning.

Common signs and symptoms of BPD

BPD looks different for everyone, but it may involve:

• Intense emotions that change quickly (e.g., anxiety, sadness, anger)

• Fear of abandonment or strong sensitivity to rejection

• Relationship difficulties (feeling close one moment, distant the next)

• Impulsive behaviours (e.g., spending, substance use, risky choices)

• Feelings of emptiness or low self-worth

• Strong anger or difficulty managing anger

• Self-harm or suicidal thoughts (in some cases)

• Dissociation or feeling “unreal” during high stress

Having some of these symptoms does not necessarily mean someone has BPD. A proper assessment is important.

Causes of Boderline Personality Disorder

There is no single cause. BPD is usually understood as a combination of factors, including:

• Genetics and temperament

• Early life experiences (including trauma, neglect, or unstable relationships)

• Differences in how the brain processes emotions and stress

• Ongoing stressors and relationship patterns

It’s important to know: BPD is not a character flaw. It’s a treatable condition.

Borderline Personality Disorder Assessment Sydney

Diagnosis involves a comprehensive psychiatric assessment, which may include:

• A detailed history of symptoms, relationships, and emotional patterns

• Screening for other mental health conditions that can overlap (e.g., depression, anxiety, bipolar disorder, PTSD, ADHD)

• Review of substance use, sleep, physical health, and medications

• Collaboration with your GP or psychologist where helpful

Accurate diagnosis matters because it guides the most effective treatment plan.

Treatment for Boderline Personality Disorder

The most effective treatment for BPD is structured psychological therapy. Many people improve significantly when they develop skills for emotional regulation, distress tolerance, and interpersonal effectiveness.

Your psychiatrist may work alongside your psychologist/therapist or recommend a therapy pathway best suited to your presentation.

Medication (when appropriate)

Medication is not a primary treatment for BPD itself, but it can help manage co-occurring symptoms such as:

• Depression or anxiety

• Sleep problems

• Mood instability

• Trauma-related symptoms

Your psychiatrist will discuss benefits, risks, and alternatives with you.

Support for crises and safety planning

If you experience suicidal thoughts or self-harm urges, part of care may include:

• A collaborative safety plan

• Strategies for managing urges and distress

• Coordinated support with other clinicians involved in your care

BPD and related conditions

BPD can co-occur with other conditions, including:

• Anxiety disorders

• Major depression

• Trauma-related disorders (including PTSD)

• Alcohol and substance use disorders

• Eating disorders (like anorexia nervosa, bulimia nervosa and binge eating disorder)

Treating these alongside BPD symptoms is often essential for meaningful recovery.

When to seek help

Consider seeking professional support if you notice:

• Emotional distress that feels hard to control

• Repeated relationship conflicts or fear of abandonment

• Impulsive behaviour that leads to regret or risk

• Thoughts of self-harm, suicide, or feeling unsafe

Our psychiatrists provide assessment and treatment for borderline personality disorder from across Sydney, including the Eastern Suburbs, Sydney CBD and surrounding areas ,with patients attending from suburbs such as Darlinghurst, Glebe, Double Bay and Waterloo.

For an appointment, please call our practice on (02) 8382 6746 or complete the enquiry form here.