Key Takeaways
- Expansive mood means behaving in a grand or impulsive way during a bipolar manic episode.
- People with an expansive mood may get into trouble, like spending too much money or taking big risks.
- If you or someone you know has extreme mood changes, talk to a doctor for help.
One of the criteria for diagnosing a manic or hypomanic episode of bipolar disorder is what we call an expansive mood. Individuals with an expansive mood may behave brashly or lavishly, assume a superior or grandiose attitude, or dress and act flamboyantly. They exhibit larger-than-life behaviors that can often be accompanied by (or result in) extreme bursts of irritability.
Expansive Behavior in Bipolar Disorder
An expansive mood can reap unfortunate consequences for a person with bipolar disorder, ranging from interpersonal confrontations to financial loss. Symptoms vary from person to person with some individuals believing themselves to be in a “creative cycle” while others are more disinhibited or recklessly impulsive.
In some cases, the person may become excessively friendly to the point where the behavior seems exaggerated and extreme. Boundaries can be ignored and even casual acquaintances or strangers may be pulled in as intimate confidantes.
Speech can often become inappropriate, such as making a crude joke at a church service or in a business meeting. Oftentimes, the person won’t even understand why the behavior was wrong or how it offended others.
It is common for a bipolar person with expansive mood to spend excessively. Credit cards can be maxed out in a sudden burst of grandiosity, lavishing with friends, relatives, or even passing acquaintances with expensive gifts.
Much of these behaviors are centered around the need to garner attention. This can translate to dressing outlandishly or standing out in a way that is inappropriate (such as wearing a bright dress to a funeral).
Expansive Mood and Other Manic Symptoms
Expansive mood is often coupled with other signs of a manic episode. Irritability is one of them. If the person believes that he is being ignored or dismissed, his exaggerated sense of importance may result in a sudden, angry outburst.
Over time, irritability and anger may displace the more flamboyant aspects of expansive mood as the manic episode progresses.
The bipolar individual may also exhibit a decreased need for sleep, spending three hours or less per night in bed. Conversations can often be frenetic and scattered. The individual may engage in more goal-oriented activities (the need to accomplish something big now) while easily being sidetracked or distracted.
More concerning, perhaps, is the sudden impulsiveness a person may exhibit during an expansive mood. It can lead to extreme risk-taking or the loss of restraint that can place the person directly in harm’s way.
Causes
The association between disinhibition and bipolar disorder is well known and strong. It may be as obvious as driving recklessly through city streets or as subtle as intentionally avoiding condoms with someone you just met. At its core is an individual’s need to seek reward without the ability to fully discern safe gambles versus unsafe gambles.
Neuroscience suggests that this behavior is driven, at least in part, by the over-activation of the nucleus accumbens, the brain’s pleasure center. It is also shown that activity in the prefrontal cortex, which plays a role in decision making, is more often impaired in bipolar individuals than in healthy ones.
Together, these factors appear to play a foundational role in the behaviors that are symptomatic of expansive mood.
Verywell Mind uses only high-quality sources, including peer-reviewed studies, to support the facts within our articles. Read our editorial process to learn more about how we fact-check and keep our content accurate, reliable, and trustworthy.
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