Bipolar Disorder: Signs to Recognise and When to Seek an Assessment

You've Googled this before. Maybe a few times. Maybe at 2am after another high that felt great until it didn't, or another stretch of flatness that you couldn't will yourself out of. Maybe someone in your family had it, and you've quietly wondered for years whether the same wiring runs through you. Maybe you've been told you have depression, but the diagnosis has never quite explained the shape of what you actually experience.

This piece won't diagnose you. Nothing on the internet can. But it can help you understand what bipolar disorder actually is, how it differs from depression and from ordinary mood swings, and when it's worth asking a professional to take a proper look.

The quick answer

Bipolar disorder is a mood disorder characterised by significant shifts between depressive episodes and elevated mood states (mania or hypomania). It's distinct from ordinary mood variability and from depression alone. There are several subtypes. Australian research suggests bipolar disorder affects around 2 percent of people aged 16 to 85 in any 12-month period (ABS, 2020–22), with average age of onset in the late teens to mid-twenties, though it's often misdiagnosed as depression for years before the bipolar pattern is recognised. Psychologists assess mood patterns, diagnose, and treat bipolar disorder. Because medication is usually part of treatment, we work closely with your GP and a psychiatrist. Treatment usually combines medication and psychological therapy, and many people find stability with the right support. If the pattern of your moods doesn't fit the depression framework, particularly if you've experienced periods of unusual energy, decreased need for sleep, racing thoughts, or impulsive decisions, it's worth asking a clinician to look at the picture more carefully.

The signs to recognise

Bipolar disorder isn't "being moody". Everyone has moods that shift. Bipolar mood episodes are categorically different, in duration, intensity, and impact.

The depressive episodes look like depression: low mood, loss of pleasure, sleep disturbance, fatigue, difficulty concentrating, feelings of worthlessness, in serious cases thoughts of suicide. These episodes typically last weeks to months.

The elevated mood episodes are what distinguish bipolar disorder from depression alone. These can take two forms:

Manic episodes, lasting at least a week, involve:

• Persistently elevated, expansive, or irritable mood.
• Significantly increased energy and activity.
• Decreased need for sleep (feeling rested after 2 or 3 hours).
• Racing thoughts and rapid speech.
• Inflated self-esteem or grandiose thinking.
• Distractibility.
• Increased risk-taking: spending sprees, sexual indiscretions, business decisions made impulsively, driving fast, substance use.
• In severe cases, psychotic features (delusions or hallucinations).

Manic episodes usually cause significant impairment in functioning and often require hospitalisation.

Hypomanic episodes are less severe versions of mania, lasting at least four days, with the same kinds of symptoms but at a lower intensity. People in hypomania are often functioning well, sometimes even better than usual on the surface. They may feel more creative, productive, charming, sexually active. This is part of why hypomania is so often missed: it doesn't feel like illness from the inside, and it often doesn't look like illness from the outside.

How bipolar is different from depression

This is the question that matters most clinically, because so many people with bipolar disorder are initially diagnosed (and treated) as having depression alone.

The reason is structural: when people seek help, they usually do so during a depressive episode. The elevated periods don't feel like a problem (they often feel like the good times), so people don't present for treatment during them. The clinician sees a low mood, prescribes treatment for depression, and the bipolar pattern remains invisible.

The clues that point toward bipolar rather than unipolar depression include:

• A family history of bipolar disorder: it has a strong genetic component.
• Earlier onset: late teens or early twenties is more typical for bipolar than for first-episode depression in older adults.
• Recurrent, severe depressive episodes, often with atypical features (oversleeping, overeating).
• Antidepressant-induced mood elevation: starting an antidepressant and feeling unusually wired, sleepless, or activated rather than just better.
• Postpartum onset: a higher proportion of bipolar disorder shows up after childbirth.
• Periods of elevated functioning that the person, on reflection, can identify as out of character (high productivity, decreased sleep, increased socialising, periods of intense creativity, periods of impulsive decision-making).

This is why a clinician who suspects bipolar will ask carefully about lifetime history, not just the current episode. The diagnosis is made over the long pattern, not the current snapshot.

Bipolar I and Bipolar II

The two main subtypes are clinically and prognostically different.

Bipolar I disorder requires at least one manic episode (with or without depressive episodes). The mania is severe enough to cause significant functional impairment or require hospitalisation. Some people with Bipolar I have predominantly manic episodes, others a mix, and some have psychotic features during episodes.

Bipolar II disorder requires at least one hypomanic episode and at least one depressive episode, but no manic episodes. The depressive episodes in Bipolar II are often very severe (sometimes more severe than in Bipolar I), and the time spent depressed is generally much longer than the time spent hypomanic. This is part of why Bipolar II is so often misdiagnosed as recurrent depression: the depressed time dominates, the hypomanic episodes are subtle and often felt as "the good times".

There's also cyclothymic disorder (longer-term, lower-intensity mood instability without full episodes meeting Bipolar I or II criteria), and other specified bipolar and related disorders for presentations that don't fit cleanly into the named categories.

Subtype matters because treatment and prognosis differ. Getting the right diagnosis is part of what makes treatment work.

What hypomania actually feels like

Most descriptions of hypomania in medical literature are clinical and external. From the inside, the experience often goes something like this:

You feel switched on. Sleep starts dropping but you don't feel tired. You feel more creative, funnier, sharper. You start projects. You text people you haven't texted in years. You make plans. You feel like the version of you that was always supposed to exist has finally arrived. Your work output goes up. You feel attractive. You feel decisive. You might spend money you don't have, drink more than usual, take a sexual risk, sign a contract you haven't fully thought through.

Then, days or weeks later, the curtain drops. The energy collapses. The decisions look different in the cold light. The depression that follows often feels worse because of the contrast with what came before.

This is the pattern that makes hypomania so often missed: it doesn't present as illness. It presents as "finally feeling like myself". The cost shows up later.

How we approach this at Unbound Minds

Psychologists assess mood patterns, diagnose, and treat bipolar disorder. Because medication is usually part of treatment, we work closely with your GP and a psychiatrist. If you suspect bipolar (or a clinician has flagged it), you can book with us directly, and we'll involve your GP and a psychiatrist where medication is needed.

What psychologists do in the bipolar picture is the work that medication alone can't do. That work includes:

• Mood monitoring and early warning sign work, so you and your treatment team can catch elevation or descent earlier rather than after damage is done.
• Sleep regulation, because disrupted sleep is both a trigger and a symptom, and sleep stability is one of the most protective factors in bipolar management.
• Skills work on the impulsive decisions that mania or hypomania can drive, including pre-committing to safety plans during stable periods.
• CBT or interpersonal and social rhythm therapy (IPSRT), both with research support for bipolar disorder.
• Family education and support, because bipolar affects the whole family, not just the person diagnosed.
• Addressing the long, often years-long fallout of misdiagnosis, the loss of trust in your own perception, the relationships and finances damaged in episodes, the identity reconstruction that comes after getting the right name for what you've been living with.

For relevant context, our piece on depression in teenagers covers some of the territory where bipolar disorder often first emerges, and our explainer on the difference between psychologists and psychiatrists is useful if you're trying to work out who to see first.

When to seek help

Worth speaking to a psychologist or your GP if:

• You have a family history of bipolar disorder and your own mood patterns are starting to feel like more than ordinary variation.
• You've been diagnosed with depression but the depression treatment isn't working as expected, or you've had a response to an antidepressant that felt activated, wired, or sleepless rather than just better.
• You can identify periods (now or in the past) of unusually elevated mood, energy, decreased sleep, racing thoughts, or impulsive behaviour that were out of character.
• You're experiencing distinct mood episodes that have a different quality and duration from your baseline.
• People close to you have raised concerns about mood swings, impulsive decisions, or behaviour that seems uncharacteristic.
• You're in a current high or low that feels significant, and you can see a pattern across your life that depression alone hasn't explained.

If you're in crisis or having thoughts of harming yourself, please contact Lifeline (13 11 14), the Suicide Call Back Service (1300 659 467), or attend your nearest emergency department. Bipolar disorder can be managed with the right support, and a current crisis is not a permanent state.

Frequently Asked Questions

What are the signs of bipolar disorder?

The defining sign is the presence of both depressive episodes and elevated mood episodes (mania or hypomania). Elevated episodes involve persistently elevated or irritable mood, decreased need for sleep, racing thoughts, increased energy and activity, and often impulsive behaviour. Depressive episodes look like clinical depression. The pattern over time, not the current snapshot, is what matters diagnostically.

How is bipolar different from depression?

Depression involves low mood episodes. Bipolar disorder involves both low mood episodes and elevated mood episodes (mania or hypomania). Bipolar is often misdiagnosed as depression because people usually seek help during the low periods. The elevated periods often don't feel like illness from the inside, but their presence changes both the diagnosis and the treatment.

What is the difference between bipolar 1 and bipolar 2?

Bipolar I requires at least one manic episode (severe, often requiring hospitalisation, lasting at least a week). Bipolar II requires at least one hypomanic episode (less severe, lasting at least four days) and at least one depressive episode, but no full manic episodes. Bipolar II depressive episodes are often very severe, and the condition is frequently misdiagnosed as recurrent depression.

What is a manic episode like?

Manic episodes involve persistently elevated, expansive, or irritable mood with significantly increased energy and activity, lasting at least a week. Common features include decreased need for sleep, racing thoughts, rapid speech, grandiose thinking, distractibility, and increased risk-taking. Severe mania often requires hospitalisation and can include psychotic features.

Can a psychologist diagnose bipolar disorder?

Yes. Psychologists assess mood patterns, diagnose, and treat bipolar disorder. Because medication is usually part of treatment, we work closely with your GP and a psychiatrist.

What is hypomania?

Hypomania is a less severe form of mania, lasting at least four days. Symptoms include elevated mood, increased energy, decreased need for sleep, racing thoughts, and increased activity, but at a lower intensity than mania. People in hypomania often function well or feel unusually productive, which is part of why it's so often missed.

Thinking about your next step?

If something in this piece has felt familiar, you're not alone, and you're not making it up. The first step is usually a conversation with a psychologist or your GP. From there, a psychologist can assess the pattern with you and support the day-to-day management, alongside a psychiatrist for medication. We see adults from St Marys, Glenmore Park, Jordan Springs, Cambridge Park, South Penrith and nearby suburbs at our Kingswood clinic (Nepean Health Hub), at Gledswood Hills, or by telehealth, and we work closely with referring GPs and treating psychiatrists. Whether you've just been diagnosed, you've suspected bipolar for years, or you're trying to make sense of why depression treatment hasn't fit the shape of what you actually experience, we'd be glad to help you find your bearings.