Frequent, unpredictable mood shifts — even between episodes — are more than just moodiness. Here’s what mood instability is, why it happens, and how to address it.
Key Takeaways
- Mood instability involves recurrent mood shifts between episodes.
- It may be linked to sleep problems and experiences of childhood trauma.
- Tools like mood tracking, therapy, better sleep, trauma support, and medication adjustments can make a difference.
When we talk about bipolar disorder, the focus often lands on the highs of mania and hypomania or the lows of depression. But if you — or a loved one — live with bipolar disorder, you may also notice another, less talked about challenge: having frequent, unpredictable shifts in mood, even when you’re not in a full mood episode. These patterns are called “mood instability.”
What Is Mood Instability and Why Does It Matter?
Mood instability means that your emotions and mood shift frequently — sometimes up, sometimes down.
Mood instability may involve:
- Smaller, more rapid changes in how you feel hour-to-hour, day-to-day, or week-to-week
- Emotional shifts that are not the same as major depressive or manic/hypomanic episodes
- Ongoing patterns that, for many, are a chronic part of living with bipolar disorder, even between episodes
Having mood instability may make it more difficult to function on a day-to-day basis. This might mean challenges at work or school, social difficulties, or even trouble with daily routines. Mood instability can be exhausting and frustrating.
Recognizing mood instability as a key part of bipolar disorder is important. It’s not “just moodiness” or a lack of willpower — it’s a real, measurable part of the illness that deserves attention.
Why Do I Have Mood Instability?
The science behind why some individuals with bipolar disorder experience chronic mood instability is in its infancy. However, research by the Heinz C. Prechter Bipolar Research Program at the University of Michigan suggests that having sleep disturbances and a history of childhood trauma may put individuals at risk.
What Can Help?
Managing mood instability starts with awareness.
- Track your moods using diaries or apps to help you and your care team spot patterns and triggers. This information can be invaluable for tailoring treatment.
- Therapy approaches such as dialectical behavior therapy (DBT) and cognitive behavioral therapy (CBT) can help regulate emotions and cope with mood swings. Skills learned in these therapies — like mindfulness, emotion regulation, and distress tolerance — can provide real-life tools to manage mood changes as they happen.
- Address triggers through therapies that target potential triggers of mood instability, such as sleep disturbances and unresolved childhood trauma. CBT and interpersonal and social rhythms therapy (IPSRT) can help improve sleep by establishing a regular bedtime and wake-up routine. This is key — it’s not just about how much sleep you get — it’s about how regular your sleep patterns are.
- Treat trauma with therapies like cognitive processing therapy (CPT) or prolonged exposure (PE), which may be helpful for individuals who have experienced childhood trauma.
- Consider medication options such as mood stabilizers or other prescribed medications. Talk with your doctor about any changes in your mood patterns so they can adjust your treatment plan as needed.
If you or someone you love is dealing with mood instability, know that you’re not alone and that help is available. Research is starting to pay more attention to this aspect of bipolar disorder, and by working together, we can find better ways to manage it and improve quality of life for everyone affected.
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