Borderline Personality Disorder Case Study: 26-Year-Old HR Executive from Navi Mumbai Whose Fear of Abandonment Drove Intense Mood Swings
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Borderline Personality Disorder Case Study: Patient Background
This borderline personality disorder case study follows Riya (name changed), a composite example that reflects how the condition commonly shows up and how it is assessed and treated at Calida Rehab. The details are illustrative and do not describe any one identifiable person.
Riya is a 26-year-old HR executive from Navi Mumbai. She lives with her parents and younger brother in Kharghar and works at a company in Belapur. Growing up, she often felt that her feelings were brushed aside at home, and arguments between her parents were loud and unpredictable. From her late teens her moods changed quickly and strongly. A short reply from a friend could leave her in tears for hours. Her friendships and relationships began with great closeness and then broke down when she felt ignored or let down. After a breakup at 25, she sent dozens of messages in one night, said she could not live without him, and later that evening hurt herself. Her mother took her to a hospital, where the doctor advised a full psychiatric assessment, and the family came to Calida Rehab. Riya also drank heavily on some weekends to switch off her feelings, although she did not drink every day.
Before the case itself, a short note. Borderline personality disorder (BPD) is a mental health condition marked by intense and unstable emotions, a shaky sense of self, fear of abandonment and difficulty keeping relationships steady. It often begins in the teenage years or early adulthood, and estimates suggest that about 1 to 2 in every 100 adults live with it. It is not a character flaw, and it is not the same as bipolar disorder. It is treatable. Because BPD can look like other conditions, you may also want to read our bipolar disorder case study and our depression case study. Where alcohol or drugs are involved, see our page on substance use disorder.
Symptoms: How Borderline Personality Disorder Showed Up
Borderline personality disorder is easy to misread because its signs overlap with mood disorders, anxiety and ordinary relationship stress. A diagnosis needs a pattern that has lasted for years, not a single bad week. Doctors look for at least five of the nine features below.
Core features of BPD
- Frantic efforts to avoid real or imagined abandonment
- Intense, unstable relationships that swing between seeing a person as perfect and seeing them as cruel
- An unstable sense of self, with sudden changes in goals, values or identity
- Impulsive behaviour in areas such as spending, risky driving, substance use or binge eating
- Repeated self-harm, threats of self-harm or suicidal behaviour
- Rapid mood shifts that often last hours rather than days
- A lasting feeling of emptiness
- Intense anger that is hard to control
- Brief, stress-related suspiciousness, or feeling unreal and cut off from oneself
Effects on daily life
- Friendships, family ties and relationships that start fast and end in conflict
- Trouble at work after emotional outbursts or sudden resignations
- Trips to the emergency room after a crisis
- Heavy drinking or other risky behaviour used to switch off painful feelings
- Shame and guilt after an outburst, often followed by another cycle
In this case: Riya described feeling everything at full volume. She feared that friends would leave her, so she tested them with late-night messages and then felt ashamed. Her view of people swung from admiration to anger within days. She said she often felt empty, did not know who she really was, and had changed her career plans three times in two years. She spent heavily online when upset, and she had hurt herself on a few occasions when the pain felt unbearable.
Doctors do not go by a single symptom. If you or someone you know is at risk of self-harm, please read the safety note near the end of this page.
Why Borderline Personality Disorder Is Often Missed or Misread
Borderline personality disorder is often missed or misread for years. The strong emotions are put down to a bad temper or poor attitude, and self-harm is wrongly dismissed as attention seeking. Because mood swings are the most visible sign, it is often mistaken for bipolar disorder, and because many people seek help during a low phase, it is often treated as depression or anxiety alone. Substance use can hide the picture further. Shame and stigma stop many people from asking for help.
The risks are real. Without treatment, BPD is linked with repeated self-harm, suicidal behaviour, substance use, depression, and strain on work and family life. The outlook is better than many people expect. Long-term studies that followed people for around ten years found that most no longer met the criteria for the diagnosis, and specialised therapy helps people get there sooner.
In this case: Riya had earlier been told she was too sensitive, and a clinic had treated her for anxiety alone. Nobody had linked her mood swings, relationship pattern and self-harm into one picture. Hearing that these were parts of a recognised and treatable condition came as a relief to her and her family.
Diagnosis: How Borderline Personality Disorder Was Assessed at Calida Rehab
There is no blood test or scan for borderline personality disorder. The diagnosis is made by a psychiatrist through a careful clinical assessment, usually over more than one session. At Calida Rehab this typically includes:
- A detailed clinical interview about moods, relationships, self-image and behaviour over the years, not only the latest crisis
- A structured assessment or screening tool for personality disorders, used alongside clinical judgement
- A risk assessment for suicide and self-harm, with a safety plan agreed on the same day
- Screening for other conditions such as depression, anxiety, bipolar disorder, post-traumatic stress and ADHD, because BPD often occurs with them and can look like them
- Screening for alcohol and drug use, including heavy weekend drinking
- A physical examination and, where needed, blood tests such as thyroid function to rule out medical causes of mood change
- Input from a family member, with the person’s consent
Telling BPD apart from bipolar disorder matters, because the treatment is different. In BPD, mood shifts are usually quick, often last hours, and are set off by events in relationships. In bipolar disorder, episodes of raised or low mood usually last days to weeks. See our bipolar disorder case study and our page on bipolar disorder.
Result in this case: Riya was diagnosed with borderline personality disorder, with depressive and anxiety symptoms that came with it. Her weekend drinking was harmful but did not meet the criteria for alcohol use disorder. She did not have bipolar disorder. Because her pattern was long-standing and clear across work, family and relationships, the psychiatrist was confident in the diagnosis.
Treatment Plan for Borderline Personality Disorder
No single treatment suits everyone. At Calida Rehab the plan is built after the assessment, and the family is involved when the person agrees.
Specialised talking therapy comes first. Psychotherapy is the main treatment for BPD. Dialectical behaviour therapy (DBT) has the strongest research support, and other structured therapies are also used. Read more on our dialectical behavioral therapy page.
Medicines play a limited role. No medicine treats BPD itself. The psychiatrist may treat co-occurring depression, anxiety or sleep problems, and reviews any prescription often. Habit-forming sedatives are avoided because they can add to impulsive behaviour and dependence. See our benzodiazepine addiction case study.
A written safety plan. The plan lists personal warning signs, steps the person can take, people they can call and what the family should do in a crisis. It is reviewed at every stage of care.
A short stay when safety is a concern. A brief stay can help during a crisis, but long admissions are not the aim, because the real work happens through therapy and practice in daily life.
Care for drinking and other risky behaviour. Alcohol and drugs make emotions harder to control, so they are addressed alongside therapy. See our page on substance use disorder.
Family involvement. Families learn what BPD is, why a person reacts so strongly, and how to listen and set calm limits without blame. See our family therapy page.
In this case: Riya’s team recommended a stay of about ten days for safety and stabilisation, followed by weekly outpatient therapy. Her parents joined family sessions. Her psychiatrist treated her low mood and sleep problems for a limited period and did not prescribe sedatives.
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Therapies Used in This Borderline Personality Disorder Case Study
The therapies below were part of Riya’s plan and are commonly used for borderline personality disorder.
- Dialectical Behaviour Therapy (DBT): teaches four sets of skills, mindfulness, emotion regulation, distress tolerance and healthy relationships, so that strong feelings can be handled without acting on urges. It usually combines weekly one-to-one sessions with a skills group. Read more on our DBT page.
- Cognitive Behavioral Therapy (CBT): helps the person notice and change thoughts such as everyone will leave me. See our CBT page.
- Group therapy: a safe place to practise skills with others who understand, and to learn that one is not alone. See our group therapy page.
- Individual counselling: one-to-one sessions on self-image, relationships and work stress. See our individual counselling page.
- Family therapy: sessions that help families communicate, respond to crises calmly and rebuild trust. See our family therapy page.
- Relapse prevention planning: a written plan for stressful situations and early warning signs, including a plan for alcohol. See our relapse prevention therapy page.
Follow-Up Care After the First Phase
Borderline personality disorder is treated over months, not weeks, and progress is rarely a straight line. Follow-up usually includes:
- Weekly or fortnightly therapy sessions, with DBT skills practised between sessions
- Regular psychiatrist reviews, including a check of any medicine and a fresh look at risk
- A safety plan that is updated and shared with the family
- A plan for known triggers such as breakups, conflict at work and loneliness at night
- Support to cut down or stop heavy drinking
- Booster sessions to refresh skills when stress rises
- Continued involvement of the family, where the person agrees
A hard week or a slip does not mean treatment has failed. It is a signal to use the plan and ask for support quickly. Read our guide on relapse in addiction recovery.
Outcome: What Recovery Looks Like After Borderline Personality Disorder Treatment
What changed for Riya over the first six months:
- Emotions: her mood swings became less intense and passed more quickly. She learned to name a feeling and pause before acting on it.
- Self-harm: urges became less frequent. When they came, she used her safety plan and skills and reached out to her mother, and she had no further hospital visits.
- Relationships: her friendships became steadier. She began telling friends how she felt instead of testing them, and fights with her family became shorter.
- Work: she kept her job, handled a disagreement with her manager calmly, and stopped sending late-night messages to colleagues.
- Alcohol: she stopped heavy weekend drinking and found other ways to relax.
- Sense of self: she began setting small goals and joined an evening art class.
It is worth being clear about what recovery means. It is not a life without strong feelings. It is a person who feels deeply, knows her triggers, has skills for the hard moments, and knows who to call when a difficult phase returns.
What the first six months of treatment usually look like
- Month 1: assessment, a written safety plan, a short stay if needed, and the start of therapy.
- Months 2 to 4: weekly therapy and a skills group, with family sessions. Skills begin to work in daily life.
- Months 5 and 6: skills settle in, the team reviews progress, and the plan is adjusted.
This is a general guide. A full DBT programme often runs for six months to a year, so the first six months are only the beginning, and every person moves at a different pace.
Key Takeaways from This Borderline Personality Disorder Case Study
- Borderline personality disorder is a treatable condition of emotions and relationships, not a character flaw.
- Fear of abandonment, quick mood shifts, self-harm and impulsive behaviour are common features, and a diagnosis needs a full assessment by a psychiatrist.
- It is often mistaken for bipolar disorder, depression or bad temper.
- Specialised therapy, especially DBT, is the core of treatment. Medicines treat co-occurring symptoms only.
- A written safety plan and family support lower the risk during a crisis.
- Many people improve over time, and asking for help early makes recovery easier.
When Should You See a Doctor?
Please speak to a doctor or psychiatrist if you or someone you know:
- Has intense mood swings that seem out of proportion and have lasted for years
- Fears being abandoned and keeps ending up in stormy relationships
- Feels empty or unsure of who they are
- Acts on impulse in ways that cause harm, such as risky spending or heavy drinking
- Gets angry in ways that damage family life or work
- Has hurt themselves, or talks about wanting to
If you or someone you know has hurt themselves, talks about ending their life or cannot stay safe, do not wait. Call 112 or go to the nearest hospital at once, or call Tele-MANAS on 14416. Stay with the person until help arrives. You can also call our 24-hour helpline for a confidential conversation. Read more in our article on suicide prevention.
Borderline Personality Disorder Case Study: Frequently Asked Questions
What is borderline personality disorder?
Borderline personality disorder is a mental health condition marked by intense, unstable emotions, fear of abandonment, a shaky sense of self and difficulty keeping steady relationships. It usually begins in the teenage years or early adulthood.
What are the main symptoms of borderline personality disorder?
Common features include fear of abandonment, stormy relationships, an unstable sense of self, impulsive behaviour, self-harm or suicidal behaviour, rapid mood shifts, emptiness and intense anger. A diagnosis needs at least five of nine features over a long period.
What causes borderline personality disorder?
There is no single cause. It is linked with a mix of inherited temperament, difficult childhood experiences such as neglect, abuse or having feelings dismissed, and differences in how the brain handles emotion.
How is borderline personality disorder different from bipolar disorder?
In borderline personality disorder, mood shifts are fast, often last hours and are set off by events in relationships. In bipolar disorder, episodes of high or low mood usually last days to weeks. A psychiatrist can tell them apart, and some people have both.
Can borderline personality disorder be treated?
Yes. Specialised talking therapy, especially dialectical behaviour therapy, is the main treatment. Long-term studies show that many people improve over time, and most no longer meet the criteria after several years.
What is DBT and why is it used?
DBT teaches skills in mindfulness, emotion regulation, distress tolerance and relationships. It was designed for people with intense emotions and urges to self-harm, and it has some of the strongest research support.
Is there a medicine for borderline personality disorder?
No medicine treats borderline personality disorder itself. A psychiatrist may treat co-occurring depression, anxiety or sleep problems, and avoids habit-forming sedatives where possible.
How can family members help?
Learn about the condition, listen without judging, stay calm during a crisis, keep to agreed limits, take part in family sessions and look after your own wellbeing. If your family member is at risk, call 112 or Tele-MANAS on 14416.
Is my information kept private?
Yes. Assessment and treatment details are confidential and are shared with family or employers only with your consent.
Sources and Further Reading
This page is for information and is not a substitute for medical advice. The case described is a composite example, and details are illustrative. If you think you or someone you know may have borderline personality disorder, please see a doctor or psychiatrist for a full assessment. If anyone is at risk of self-harm, call 112 or Tele-MANAS on 14416 at once.
- American Psychiatric Association. Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition, Text Revision (DSM-5-TR). 2022.
- Gunderson JG, Herpertz SC, Skodol AE, Torgersen S, Zanarini MC. Borderline personality disorder. Nature Reviews Disease Primers, 2018; 4: 18029.
- Linehan MM. DBT Skills Training Manual, 2nd edition. Guilford Press; 2015.
- Stoffers JM, Voellm BA, Ruecker G, Timmer A, Huband N, Lieb K. Psychological therapies for people with borderline personality disorder. Cochrane Database of Systematic Reviews, 2012; (8): CD005652.
- Zanarini MC, Frankenburg FR, Reich DB, Fitzmaurice G. Time to attainment of recovery from borderline personality disorder and stability of recovery: a 10-year prospective follow-up study. American Journal of Psychiatry, 2010; 167(6): 663-667.
- National Institute for Health and Care Excellence. Borderline personality disorder: recognition and management (CG78). 2009.