Why Prodromal Signs Matter

A prodrome is an early warning phase — a cluster of subtle changes that signal a full episode may be on its way. For people living with bipolar disorder, and for those who care for them, learning to spot these signals early can allow for faster contact with a treatment team, medication review, or other strategies that may reduce the severity of what follows.

It is important to understand that bipolar disorder covers a spectrum of experiences. Manic, hypomanic, and depressive episodes each have their own signature, and their early warning signs differ accordingly. The checklist below separates those two directions so the signals are easier to act on.

No list of warning signs can diagnose or predict an episode with certainty. These are patterns observed across many people — individual warning signs vary. The goal here is informed awareness, not self-diagnosis. Always involve a qualified mental health professional in any decisions about care or treatment.

This checklist is not a diagnostic tool

The signs listed here are commonly reported early indicators, but they overlap with symptoms of other conditions including anxiety, ADHD, thyroid disorders, and sleep problems. Only a qualified clinician can assess whether these changes are consistent with a bipolar episode. Use this checklist to inform a conversation with your provider, not to reach a conclusion on your own.

If you notice thoughts of self-harm

If any signs of a depressive episode include thoughts of harming yourself or ending your life, contact a mental health professional, go to an emergency department, or call or text 988 (the Suicide and Crisis Lifeline in the US) immediately. This checklist is not designed for crisis situations — please seek help right away.

What to Watch For and How to Use This Checklist

This checklist is designed for people who already have a bipolar disorder diagnosis and want a structured way to monitor themselves, as well as for caregivers who want to understand what changes may signal that something is shifting. If you are unsure whether bipolar disorder is relevant to your situation, learn why it is frequently mistaken for other conditions before drawing any conclusions.

Go through each group and note which items feel familiar or are actively occurring. Keep in mind that a single item alone rarely signals an episode — it is the pattern and clustering of changes, especially over several consecutive days, that carries more weight.

Consider sharing a completed version of this checklist with your care team or, if you are a caregiver, with the person's clinician. For broader guidance on how to support someone, see our article on talking to someone you care about who has bipolar disorder.

Required

Mood tracking journal

Record daily mood, sleep hours, energy level, and notable behaviours to help identify personal episode patterns over time.

Optional

Mood tracking app

A digital alternative to a paper journal that can generate charts and trends for easier review with a clinician.

Required

Personal warning sign list

A written record, ideally created with a clinician, of your specific individual early signals — more targeted than a general checklist.

Required

Crisis contact card

A simple card or phone note listing your mental health provider, emergency contact, and crisis line number in case warning signs escalate quickly.

Early signs of an emerging manic or hypomanic episode

Notice a reduced need for sleep — sleeping significantly fewer hours than usual but waking feeling unusually rested or energised. Must
Observe a marked increase in energy or activity level that feels distinctly different from a good mood or an energetic day. Must
Recognise racing thoughts or a feeling that your mind is moving faster than normal, making it hard to focus on one thing. Must
Notice speech becoming faster, louder, or harder for others to interrupt — sometimes called pressured speech. Must
Detect an elevated or expansive mood that feels unusually euphoric, powerful, or invincible — beyond ordinary happiness. Must
Watch for increased irritability or agitation, especially when plans are interrupted or others seem slow. Should
Notice impulsive decision-making — large purchases, sudden plans, or commitments that would normally feel risky. Must
Observe an increase in goal-directed activity — starting many new projects or working intensely at unusual hours. Should
Detect grandiose thinking — beliefs that you have special abilities, connections, or importance that others do not recognise. Should
Note decreased appetite or forgetting to eat during periods of high activity. Nice to have

Early signs of an emerging depressive episode

Notice a significant drop in energy or motivation — tasks that are normally easy begin to feel effortful or impossible. Must
Observe changes in sleep — sleeping much more than usual, struggling to get out of bed, or having difficulty falling asleep despite exhaustion. Must
Detect a shift toward persistent low mood, sadness, or emotional flatness lasting most of the day on most days. Must
Notice withdrawal from social contact — cancelling plans, avoiding calls, or spending increasing time alone. Must
Recognise slowed thinking or difficulty concentrating — reading the same sentence repeatedly, forgetting words, or struggling to make decisions. Must
Watch for increased negative self-talk — recurring thoughts of guilt, worthlessness, or hopelessness. Should
Observe changes in appetite — eating noticeably more or less, or losing interest in food that is normally enjoyed. Should
Notice a loss of interest in activities, hobbies, or relationships that usually bring pleasure (called anhedonia). Must
Detect physical heaviness — a feeling of limbs being weighted down or body movements feeling slower than usual. Nice to have
Notice any thoughts of self-harm or hopelessness — seek professional support immediately if these arise. Must
Track whether normal routines — personal hygiene, cooking, leaving the house — are starting to slip without clear external reason. Should
Note a general sense that something feels "off" even if you cannot name it — many people report this vague unease days before a fuller episode. Nice to have

After You Work Through the Checklist

If several items in either group resonate — particularly sleep disruption, energy shifts, or changes in thinking speed — consider contacting your mental health provider before a full episode develops. Early intervention is one of the most consistently supported approaches in bipolar disorder management.

It is also worth distinguishing what you notice here from other conditions. Persistent low energy and low mood without the high phases may point toward a different depressive pattern. Burnout and chronic stress can also produce fatigue and mood instability — see our overview of burnout for comparison. And if you are noticing broader signs of mental strain beyond mood cycling, this broader guide to mental health warning signs may be helpful.

Mood tracking — using a simple journal or a dedicated app — can reveal personal patterns that are hard to see in the moment. Over weeks and months, this record becomes genuinely useful information for a clinician.

Patterns matter more than single signs

A single night of poor sleep or one impulsive decision does not indicate a bipolar episode. What matters is a cluster of changes occurring together over several days that represents a noticeable departure from your baseline. Keeping a consistent mood log over weeks gives you and your clinician the context needed to identify meaningful shifts rather than normal day-to-day variation.

This article is for general informational and educational purposes only. It is not a substitute for professional medical advice, diagnosis, or treatment. Always consult a qualified healthcare provider with questions about your mental health or that of someone in your care.