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Recognizing the Early Warning Signs of a Mood Episode in Bipolar Disorder

4/16/2026

 
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Recognizing the Early Warning Signs of a Mood Episode in Bipolar Disorder

​One of the most powerful tools available to individuals living with bipolar disorder is also one of the most underutilized: the ability to recognize when a mood episode is beginning before it fully takes hold. Early warning signs, sometimes called prodromal symptoms, are the subtle shifts in mood, thinking, behavior, sleep, and energy that often precede a full manic, hypomanic, or depressive episode. Learning to identify your personal early warning signs, and knowing what to do when they appear, is a cornerstone of effective bipolar disorder management and a central component of Cognitive Behavioral Therapy (CBT) for bipolar disorder.

Why Early Warning Signs Matter
Mood episodes in bipolar disorder do not typically appear out of nowhere. In most cases, there is a window of time, sometimes days, sometimes weeks, during which early signs are present and intervention is possible. Research consistently supports the value of early intervention in bipolar disorder. Catching an emerging episode early can mean the difference between a brief period of increased symptoms and a full-blown episode that significantly disrupts your life, relationships, and functioning.

The challenge is that early warning signs can be subtle, easy to rationalize, and can even feel good at first. This is why developing awareness of your personal pattern is so important. What triggers your episodes? What are your first signs? How long is your typical warning window? These are questions worth exploring with your therapist.

Early Warning Signs of a Manic or Hypomanic Episode
While early warning signs vary from person to person, some of the most commonly reported signs that a manic or hypomanic episode may be emerging include:

Changes in sleep: Needing less sleep than usual without feeling tired is one of the most reliable early warning signs of an emerging manic or hypomanic episode. You may find yourself waking up earlier than usual feeling energized, or staying up later without experiencing the fatigue you normally would. It is worth noting that sleep disruption is not just a symptom of mania, it can also trigger and accelerate a manic episode. The relationship between sleep and mood in bipolar disorder is bidirectional, interconnected, and critically important.

Increased energy or activity: Feeling unusually energized, productive, or motivated, particularly in ways that feel out of proportion to your circumstances, can be an early sign. You may notice yourself taking on more projects, making ambitious plans, or feeling like you can accomplish more than usual.

Racing or sped-up thinking: Thoughts that feel faster than normal, jumping quickly from one idea to the next, or difficulty slowing your mind down can be an early indicator of an emerging elevated episode.

Increased talkativeness: Talking more than usual, feeling like your words can not keep up with your thoughts, or others commenting that you seem more talkative or difficult to interrupt are worth paying attention to.

Elevated or irritable mood: Feeling unusually elated, confident, or "on top of the world," or conversely, feeling more easily irritated or agitated than usual, can both signal an emerging manic or hypomanic episode. It is important to recognize that mania does not always feel good. Irritable mania is a real and common presentation.

Increased impulsivity or risk-taking: Making impulsive decisions, spending money more freely than usual, engaging in uncharacteristic risk-taking behavior, or feeling unusually uninhibited socially are all worth noting.

Decreased need for food: Some individuals notice changes in appetite or a decreased interest in eating as an early sign of an elevated episode, often related to increased energy and activity.

Heightened sensory experience: Some individuals report that colors seem brighter, music sounds better, or the world generally feels more vivid or intense in the early stages of an elevated episode.

Early Warning Signs of a Depressive Episode
Just as important, and often more difficult to catch early because the changes are quieter and more gradual, are the early warning signs of an emerging depressive episode. These may include:

Changes in sleep: In contrast to manic episodes, emerging depression often brings increased sleep, difficulty getting out of bed, or hypersomnia. Some individuals experience insomnia during depressive episodes as well.

Withdrawal and isolation: Pulling away from friends, family, or activities you normally enjoy, even in subtle ways, like responding to fewer texts or skipping social plans, can be an early sign.

Decreased motivation or energy: Feeling more fatigued than usual, procrastinating on tasks that are normally manageable, or noticing a drop in your overall drive and initiative.

Slowed thinking: Thoughts that feel heavier, slower, or harder to organize than usual. Difficulty making decisions that are normally straightforward.

Increased negativity or hopelessness
: A subtle shift in your overall outlook, things feeling harder, less enjoyable, or less worthwhile, even before full depressive symptoms set in.

Changes in appetite: Eating more or less than usual, or losing interest in foods you normally enjoy.

Increased irritability: Like manic episodes, depressive episodes can also present with irritability, feeling more easily frustrated, short-tempered, or emotionally reactive than your baseline.

Your Warning Signs Are Personal
It is worth emphasizing that early warning signs are highly individual. While the list above covers commonly reported signs, your personal pattern may look different. Some individuals have very reliable, consistent warning signs that appear in the same order every time. Others have more variable patterns. Part of the work of therapy is helping you develop an individualized understanding of your own mood episode patterns, including your triggers, your early warning signs, your typical timeline, and the interventions most likely to help at each stage.

What to Do When You Notice Early Warning Signs

Noticing early warning signs is only half of the equation. Having a plan for what to do when they appear is equally important. Some evidence-based strategies to discuss with your therapist include:

Contact your treatment providers. If you notice early warning signs, reaching out to your therapist and/or medication provider promptly gives your treatment team the opportunity to intervene before a full episode develops. Do not wait until things feel out of control.

Prioritize sleep. Given the bidirectional relationship between sleep and mood in bipolar disorder, protecting your sleep is one of the most important behavioral interventions available. If sleep is being disrupted, addressing it quickly is a priority.

Reduce stimulation and stress. During the early stages of an elevated episode, reducing your exposure to stimulating environments, decreasing your commitments, and building in rest can help slow the momentum of an emerging episode.

Engage your support system. Trusted friends, family members, or partners who are educated about your warning signs can be invaluable. They may notice changes before you do, and having someone you trust who can gently flag what they are observing can be an important safety net.

Use your coping plan. If you have developed a mood episode action plan with your therapist, which is a standard component of CBT for bipolar disorder,  this is the time to put it into action. Do not wait for certainty that an episode is coming. Acting on early warning signs, even if it turns out to be a false alarm, is always the right call.

Avoid alcohol and recreational substances. Substance use can accelerate and worsen mood episodes and significantly undermine the effectiveness of your medications. This is particularly important during periods of elevated warning signs.

Building Your Personal Warning Signs Profile
One of the most valuable things you can do, ideally in collaboration with your therapist, is to develop a written personal warning signs profile. This is a document that outlines your specific early warning signs for both manic and depressive episodes, your known triggers, your typical timeline from first warning sign to full episode, and your personalized action plan for each stage. Having this document in place before an episode begins means you are not trying to create a plan when your judgment may already be compromised.

Some individuals also find it helpful to involve a trusted person in their life in this process, sharing your warning signs profile with a partner, family member, or close friend so that they can serve as an additional layer of awareness and support.

The Bottom Line
Early warning sign recognition is not about living in fear of the next episode or constantly monitoring yourself for signs of instability. It is about developing the self-awareness and the tools to respond quickly and effectively when your mood begins to shift, so that you spend less time in episodes and more time living your life.

If you are living with bipolar disorder and would like support in developing your personal early warning signs profile and mood management plan, we are here to help. At OakHeart, Center for Counseling, our team of licensed psychologists, counselors, and social workers in North Aurora and Sycamore, Illinois provides evidence-based treatment for bipolar disorder to clients throughout Kane County, DeKalb County, DuPage County, and the surrounding Chicago suburbs. We also offer telehealth services throughout Illinois.

References


American Psychiatric Association. (2013). Diagnostic and statistical manual of mental disorders (5th ed.). Washington, DC: Author.

National Institute of Mental Health. (2023). Bipolar disorder. https://www.nimh.nih.gov/health/topics/bipolar-disorder

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    OakHeart 
    ​Center for Counseling, Mediation, and Consultation

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    Kat Harris, PhD
    Vanessa Osmer, MA

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  • Home
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