Bipolar II Disorder Case Study: 27-Year-Old Marketing Manager from Mumbai Whose Productive Highs Were Followed by Months of Depression
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Bipolar II Disorder Case Study: Patient Background
This bipolar II disorder case study follows Rohan (name changed), a composite example that reflects how bipolar II disorder 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.
Rohan is a 27-year-old marketing manager from Mumbai who lives with his parents and younger sister. Since his college years he had noticed a pattern. Every few months he would have four to six days when he slept only three or four hours, felt full of energy and ideas, talked fast, took on extra projects and spent money freely. At work these were his best weeks, and colleagues called him a star. Each spell was followed by a crash lasting two to three months, with heavy tiredness, low mood and a feeling of being a fraud. Eight months before he came to us, a general practitioner treated his low mood with an antidepressant. Within two weeks Rohan felt wired and irritable, barely slept and stopped the tablets on his own. Then came a third long crash. He missed three weeks of work, stayed in bed most of the day and told his father that he could see no point in going on. His father brought him for help. A maternal uncle had been described in the family as having “mood problems” but was never treated.
Before the case itself, a short note. Bipolar II disorder is a mood disorder in which a person has had at least one hypomanic episode and at least one major depressive episode, but has never had a full manic episode. Hypomania is a milder, shorter form of high mood and energy. It often feels good, so it is easy to miss, and it is usually the depression that brings people for help. A related condition, cyclothymic disorder, involves many shorter and milder ups and downs over at least two years that never reach the full criteria for either episode. If you want the full picture, read our page on bipolar disorder and our guide, Depression vs Bipolar Disorder. Our bipolar I case study shows a different pattern.
Symptoms: How Bipolar II Disorder Showed Up in Daily Life
Bipolar II disorder swings between two states: hypomania and depression. The depressive periods are usually longer and cause most of the suffering. Between episodes many people feel fairly well, which is one reason the pattern is hard to spot.
Hypomanic phases (at least four days in a row)
- Needing much less sleep, such as three or four hours, without feeling tired
- Feeling unusually energetic, confident or “on top of the world”
- Talking more or faster than usual, with thoughts that race
- Being easily distracted, or taking on many tasks at once
- More goal-directed activity, such as sudden big plans or working through the night
- Spending, driving or taking risks in a way that is out of character
- Irritability, especially when plans are questioned
Depressive phases (at least two weeks)
- Low, empty or hopeless mood for most of the day, on most days
- Loss of interest or pleasure in work, friends and hobbies
- Sleeping much more than usual, or very poor sleep
- Heavy tiredness, slowed movement and difficulty concentrating
- Feelings of worthlessness or guilt
- Changes in appetite and weight
- Thoughts of death or suicide, which always need to be taken seriously
What is usually not present in bipolar II disorder
- A full manic episode, which lasts at least a week, causes marked problems at work or in relationships, or needs hospital care
- Hallucinations or beliefs that are clearly false during a high
- Hospital admission because of a high mood episode
In this case: Rohan’s highs lasted four to six days. He slept three to four hours a night, felt sharp and unstoppable, wrote long proposals overnight and bought a new laptop and a phone he did not need. He became short-tempered with his sister if she questioned him. He functioned well at work during these phases, so no one saw them as an illness. The crashes were different. He slept ten to twelve hours, could not get out of bed, stopped replying to messages, felt worthless and told himself that his highs were proof he was a fraud. He had passive thoughts of not wanting to live, with no plan and no intent. He never heard voices or held false beliefs, and he was never admitted to hospital. All of this was checked carefully at assessment.
Why Bipolar II Disorder Is Often Mistaken for Depression
Bipolar II disorder is often mistaken for depression, and many people wait years for the right diagnosis. There are three main reasons. First, people seek help when they are low and rarely when they are high. Second, hypomania feels like productivity, confidence or “my best self”, so it is not described as a problem unless someone asks about it directly. Third, the depressive phase looks just like major depression. Long-term follow-up studies, such as the one by Judd and colleagues (2003), found that people with bipolar II disorder spent far more of their time depressed than hypomanic, which is why the lows dominate the picture.
The wrong diagnosis matters. Treating bipolar depression with an antidepressant alone can trigger agitation, a faster cycle of mood changes or a switch into hypomania. Left untreated, bipolar II disorder is recurrent, can damage work and relationships, and carries a real risk of suicide during depressive episodes. The earlier it is recognised, the sooner a stable plan can start.
In this case: Rohan’s family and his doctor saw only the crashes. His mother said he was “just tired and stressed”. Rohan himself thought of his high weeks as being in form, and he had never mentioned them. The general practitioner prescribed an antidepressant for low mood without asking about periods of high energy, and the tablets left him wired and sleepless. It was only when the psychiatrist at Calida Rehab asked about the best weeks of his life, and then spoke to his sister, that the pattern appeared.
Diagnosis: How Bipolar II Disorder Was Assessed at Calida Rehab
There is no blood test or scan that confirms bipolar II disorder. The diagnosis is made by a psychiatrist through a careful clinical assessment, supported by screening scales and medical checks. At Calida Rehab this typically includes:
- A detailed interview about mood, sleep, energy, spending and risk-taking, with a timeline of every high and low since the teenage years
- A specific history of hypomania, asking about periods of unusually high energy, reduced need for sleep and changed behaviour, even when they felt good
- Information from family or close friends, with the person’s consent, because people often under-report their highs
- Standard rating scales, such as the PHQ-9 for depression and the Hypomania Checklist (HCL-32) or the Mood Disorder Questionnaire to screen for a bipolar pattern
- A risk assessment for suicidal thoughts, impulsive behaviour and alcohol or drug use
- A medical check for thyroid problems, anaemia, low vitamin D or B12 and blood sugar problems, which can mimic or worsen mood symptoms
- Screening for other conditions such as ADHD, anxiety, personality difficulties and substance use, which can look similar or exist alongside
For a diagnosis of bipolar II disorder, the psychiatrist looks for at least one hypomanic episode (an elevated or irritable mood with increased energy lasting at least four days, with several of the typical symptoms and a clear change from usual behaviour) and at least one major depressive episode lasting two weeks or more. The person must never have had a full manic episode, and the mood swings must cause distress or problems in daily life. Cyclothymic disorder is considered when there are two years or more of frequent hypomanic and depressive symptoms that never meet the full criteria for an episode. Bipolar I disorder is ruled out by the absence of any full manic episode. See our page on depression to see how unipolar depression is told apart.
Result in this case: Rohan was diagnosed with bipolar II disorder, current episode depressed. His PHQ-9 score was 17, which fits moderately severe depression, and his Hypomania Checklist score was 22, well above the usual screening cut-off of 14. His thyroid tests and blood count were normal and his vitamin D was low. His alcohol screening score showed hazardous drinking, mostly during his high phases. He had never had a full manic episode, never had hallucinations or false beliefs and had no history of hospital care for mood. Cyclothymic disorder was considered and set aside because he had full major depressive episodes.
Treatment Plan for Bipolar II Disorder
Bipolar II disorder is a long-term condition, but it is treatable, and many people live stable and productive lives with the right plan. At Calida Rehab the plan is made after the assessment, built around the person, and involves the family when the person agrees. Most plans combine the following.
Safety first. The team checks for suicidal thoughts at every stage and agrees a clear safety plan, including whom to call and what to do on a bad night.
Mood-stabilising medicines. The psychiatrist chooses the medicine according to the person’s pattern, health and preferences. Lamotrigine, lithium and quetiapine are among the options with evidence in bipolar II disorder, and the decision is made together with the person. Lamotrigine must be raised very slowly because of a rare but serious rash. Antidepressants are used with great care, usually not on their own, because they can trigger a switch into hypomania or mixed states. Never start, stop or change a dose on your own.
Protecting sleep and routine. Irregular sleep and routine can set off both highs and lows. The plan builds fixed times for waking, meals, work and sleep, drawing on the ideas of interpersonal and social rhythm therapy.
Psychoeducation and mood charting. The person and the family learn the warning signs of a high and of a low, and keep a simple daily mood and sleep chart so that changes are caught early.
Talking therapies. Cognitive Behavioral Therapy (CBT) and related approaches help with depressive thinking, with managing stress and with keeping to the plan.
Alcohol and substances. Alcohol worsens sleep and mood swings. The plan includes cutting down or stopping, with support.
Family involvement. Relatives learn what the condition is, how to raise concerns without a fight and how to respond to early warning signs.
In this case: Rohan was admitted to a structured two-week programme at Calida Rehab for assessment, stabilisation and a start on therapy. After a discussion with Rohan and his father, lamotrigine was started at a very low dose and raised slowly over several weeks, with a short course of low-dose quetiapine at night to help sleep and mood. No antidepressant was restarted. He was given vitamin D. He began a fixed sleep and wake time and a daily mood chart. He agreed to stop drinking during the early months. His father and sister joined the family sessions, and they agreed on a simple early-warning list, including a spending rule: any purchase above a set amount would wait 48 hours.
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Therapies Used in This Bipolar II Disorder Case Study
The therapies below were part of Rohan’s plan and are commonly used in the care of bipolar II disorder and other mood conditions.
- Psychoeducation: helps the person and family understand the condition, the medicines and the early signs of a high or low. See our psychoeducation page.
- Cognitive Behavioral Therapy (CBT): helps the person challenge thoughts such as “my highs prove I am a fraud” and builds habits around sleep, activity and stress. Read more on our CBT page.
- Interpersonal Therapy (IPT): works on relationships and daily rhythms, which are closely tied to mood stability. See our interpersonal therapy page.
- Individual counselling: a safe space to talk about shame, fear of relapse and the effect of the illness on career and relationships. See our individual counselling page.
- Relapse prevention work: a written plan of warning signs and first steps for both highs and lows. See our relapse prevention therapy page.
- Occupational therapy: rebuilds a daily routine and a steady pace of work. See our occupational therapy page.
- Group therapy: meeting others with the same condition reduces shame and isolation. See our group therapy page.
- Family therapy: sessions that help relatives support the person and respond to warning signs. See our family therapy page.
Follow-Up Care After the First Phase
Bipolar II disorder is recurrent, so care does not end when the first phase of treatment ends. Follow-up usually includes:
- Regular reviews with the psychiatrist to check mood, sleep and side effects, with more frequent reviews in the first months and wider gaps later
- Continuing mood-stabilising medicine for the long term, because stopping too early is a common reason for relapse
- Blood tests or other checks when the chosen medicine needs them, and prompt attention to any new skin rash
- A daily mood and sleep chart, reviewed with the team
- Booster therapy sessions during stress, shift changes, travel across time zones or other sleep disruption
- A written plan with early warning signs of a high and of a low, shared with the family
- Support with workload, deadlines and returning to full-time work
- Continued support to keep alcohol and other substances out of the picture
Our bipolar disorder page explains what long-term care looks like.
Outcome: What Recovery Looks Like With Bipolar II Disorder
What changed for Rohan over the first three months:
- Mood and scores: his PHQ-9 score fell from 17 to 5, and his scores for hypomanic symptoms stayed low throughout.
- Sleep: he slept about seven hours at regular times, and the nights of three hours stopped.
- Energy: the long crashes did not return, and his energy became steadier, with no sudden bursts followed by collapse.
- Spending and risk: there were no impulsive purchases after the 48-hour rule began.
- Alcohol: he stayed off alcohol and said he felt clearer.
- Family: his father and sister knew the warning signs and could raise concerns early without arguments.
- Work: he returned to work with a more even pace and agreed to a limit on late nights.
It is worth being clear about what recovery means. Recovery is not about losing creativity or energy. It means steadier moods, regular sleep, fewer and shorter episodes and a life that is no longer ruled by crashes. Some difficult days still come, and that is normal.
What the first six months of treatment usually look like
- Month 1: assessment, diagnosis, safety planning, a short structured programme and a written plan
- Months 2 and 3: medicines are adjusted slowly, therapy builds and family sessions continue
- Months 4 to 6: gains settle in, and the team reviews what is working and what still needs support
This is a general guide. Every person moves at a different pace.
Key Takeaways from This Bipolar II Disorder Case Study
- Bipolar II disorder is a medical condition. It is not a weakness, a bad temper or a lack of discipline.
- Hypomania often feels good and is easily missed, so it must be asked about directly, with help from family.
- Bipolar II disorder is often mistaken for depression, and an antidepressant alone can make it worse.
- A proper diagnosis includes a timeline of highs and lows, family input and checks for thyroid problems and substance use.
- Cyclothymic disorder involves milder ups and downs over at least two years and is told apart by the absence of full episodes.
- The best results usually come from mood-stabilising medicines, regular sleep and routine, therapy and family support together.
- With treatment, many people reach steady, productive lives, and getting help early is always worth it.
When Should You See a Doctor?
Please speak to a doctor if you or someone in your family:
- Has felt low, empty or hopeless for more than two weeks, especially if there have also been periods of unusually high energy
- Has times of needing very little sleep without feeling tired, together with racing thoughts, big plans or reckless spending
- Has had low mood treated with an antidepressant but felt wired, irritable or worse
- Has noticed that moods swing in a regular pattern, with a family history of mood problems
- Is drinking more during high or low periods
Some symptoms need urgent care. Seek help immediately if there are thoughts of suicide or self-harm, if someone has not slept for days and seems out of control, or if they hear voices or hold beliefs that are clearly untrue. Call 112 in an emergency, or Tele-MANAS on 14416. You can also call our 24-hour helpline for a confidential conversation.
Bipolar II Disorder Case Study: Frequently Asked Questions
What is bipolar II disorder?
Bipolar II disorder is a mood disorder with at least one hypomanic episode and at least one major depressive episode, but never a full manic episode. Hypomania is a milder, shorter form of high mood and energy, and the depressive episodes are usually the longer and harder part.
What is the difference between bipolar I and bipolar II disorder?
Bipolar I disorder involves at least one full manic episode, which can cause serious problems or need hospital care. Bipolar II disorder involves hypomania, which is milder, together with major depression. Both need long-term treatment, and bipolar II is not simply a milder version of the illness, because the depression can be severe.
What is cyclothymia?
Cyclothymic disorder involves many periods of mild high and low mood over at least two years, with symptoms that never meet the full criteria for a hypomanic or major depressive episode. It can sometimes progress to bipolar II disorder, so it should be followed by a psychiatrist.
Why is bipolar II disorder often mistaken for depression?
People seek help during the lows, and hypomania often feels like productivity or confidence, so it is not mentioned. Without a direct question about high-energy periods, the picture looks like ordinary depression.
Is it safe to take an antidepressant alone for bipolar II depression?
Usually not. Antidepressants on their own can trigger a switch into hypomania, agitation or faster mood cycles in people with bipolar disorder. A psychiatrist usually pairs them with a mood stabiliser, or chooses another approach, and the person should never start or stop medicine alone.
How is bipolar II disorder treated?
Treatment usually combines a mood-stabilising medicine chosen by the psychiatrist, regular sleep and routine, psychoeducation, talking therapy such as CBT, mood charting, reducing alcohol and family support. The plan is adjusted as the person responds.
Is bipolar II disorder curable, and will I need medicines for life?
Bipolar II disorder is a long-term condition that can be controlled but not cured. Many people stay well for long periods with treatment, and most need maintenance medicine for a long time. Any change is decided with the psychiatrist.
Can I keep working with bipolar II disorder?
Yes. Many people work successfully with the right treatment, a steady routine and a manageable workload. Early warning signs and a plan for stressful periods help to protect the job.
Does bipolar II disorder run in families?
It can. Having a close relative with bipolar disorder or other mood disorders raises the risk, but it does not mean the illness is certain, and many people with a family history stay well.
Is my information kept private?
Yes. Assessment and treatment details are confidential and are shared with family or employers only with your consent, except where there is a serious risk to safety.
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 close to you may have bipolar II disorder, please see a psychiatrist for a full assessment.
- American Psychiatric Association. Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition, Text Revision (DSM-5-TR). 2022.
- National Institute for Health and Care Excellence. Bipolar disorder: assessment and management (CG185). nice.org.uk/guidance/cg185
- Yatham L.N., et al. Canadian Network for Mood and Anxiety Treatments (CANMAT) and International Society for Bipolar Disorders (ISBD) 2018 guidelines for the management of patients with bipolar disorder. Bipolar Disorders, 2018; 20(2): 97-170.
- Judd L.L., et al. A prospective investigation of the natural history of the long-term weekly symptomatic status of bipolar II disorder. Archives of General Psychiatry, 2003; 60(3): 261-269.
- Angst J., et al. The HCL-32: towards a self-assessment tool for hypomanic symptoms in outpatients. Journal of Affective Disorders, 2005; 88(2): 217-233.