Grandiose Delusions and Grandiosity in Bipolar Disorder

Key Takeaways

• Grandiosity is a symptom of manic episodes of bipolar disorder and can make you feel superior to others.
• Grandiose delusions occur in roughly two-thirds of people with bipolar disorder.
• People with grandiosity in bipolar disorder usually need medications, psychotherapy, and support.

Grandiose ideations, or grandiosity, are an exaggerated sense of one’s importance, power, knowledge, or identity—even with little evidence to support these beliefs. People with bipolar disorder (BD) may experience this symptom. Grandiosity can occur during both manic and hypomanic episodes.

Grandiosity vs. Delusions of Grandeur

Grandiosity is not the same as having delusions of grandeur. Grandiosity is a feeling of being superior to others or inflated self-esteem. Conversely, delusions of grandeur are false beliefs or delusions of superiority not rooted in reality, such as someone believing they have found the cure for a significant disease.

Prevalence of Grandiosity

The number of people with grandiose ideations is somewhat unclear, with research indicating that grandiosity is present in somewhere between 8% and 65% of the general population. That’s a different question than how common grandiosity is in people with bipolar disorder.

In a 2015 study of 149 patients diagnosed with bipolar disorder, more than half had thought content disturbances that were mainly grandiose and persecutory in nature. Research published in the journal Bipolar Disorders suggests that around 57% of youth with BD experience grandiosity.

Grandiose delusions occur in roughly two-thirds of people with bipolar disorder and one-half of people with schizophrenia.

Grandiose thoughts are also common in people with substance use disorders, particularly in those who use cocaine and amphetamines. Additionally, grandiosity is thought to be a possible facet of personality disorders, particularly narcissistic personality disorder.

Causes of Grandiosity

Grandiosity is one of the seven symptoms of a manic or hypomanic episode of bipolar disorder. Within the context of the disorder, grandiosity is considered a mood-congruent delusion consistent with a manic state.

During manic or hypomanic episodes, the brain’s chemistry and activity change in complex ways, leading to symptoms.

No one knows exactly why these changes happen. It’s also unclear why some people experience severe symptoms and others do not. Although grandiosity is a common feature of bipolar mania and hypomania, it does not occur in everyone with the disorder.

Signs and Symptoms of Grandiosity

The term “grandiosity” refers to an unrealistic sense of superiority in which someone believes themself to be unique and better than others. It also infers a disdain for people considered inferior (by class, intelligence, beauty, heritage, etc.).

As a symptom, grandiosity exists on a spectrum. It can range from inflated self-esteem to sweeping delusions of grandeur. Grandiosity can be challenging to identify and pin down.

Examples of grandiosity include:

• Exaggerating achievements
• Criticizing and dismissing the achievements or talents of others
• Constantly boasting and talking about themself
• A belief that they are infallible or invulnerable
• A belief that they are more intelligent than others
• Thinking that rules don’t apply to them
• Acting selfishly
• Treating others with disdain or contempt
• Not caring if they hurt someone with their actions
• Being quick to anger if challenged
• An inability to see how their behavior affects others
• An inability to see how unrealistic their beliefs and actions are

Grandiosity may not be recognized until it becomes extreme. Often, it’s the person’s friends or family members who realize that the behavior is inconsistent with the person’s usual demeanor.

Delusions of Grandeur

There is a subtle difference between grandiose delusions and delusions of grandeur. Grandiose delusions are less exaggerated than delusions of grandeur. For instance, a grandiose delusion may involve thinking you have more musical talent than you do, whereas a delusion of grandeur would be that you are the only one who can keep world leaders safe.

People who experience delusions of grandeur, as well as those around them, do not always recognize it as being anything more than pompousness, arrogance, or boastfulness. If delusions occur during manic episodes, this is a clue that bipolar disorder is involved.

Grandiosity in Narcissistic Personality Disorder

At times, it can be difficult to distinguish between grandiose thinking during a manic or hypomanic mood and grandiosity as a facet of narcissistic personality disorder (NPD). 

NPD is broadly characterized by self-centeredness and an inability to have empathy for others. People with NPD manipulate others to get what they want. They consistently exhibit a pattern of grandiosity, a need for admiration, and a lack of empathy in a way that interferes with their relationships and well-being.

One of the key ways to differentiate grandiosity in BD from grandiosity in NPD is the co-occurrence of mania symptoms. When grandiosity accompanies any of these abnormal behaviors, bipolar disorder should be explored as a possible cause. Grandiosity can also occur in hypomania (a less severe form of mania), but it is usually less problematic and easily missed in diagnosis.

Another key differentiator is time. Personality disorders like NPD are pervasive patterns of interactions with others. By contrast, bipolar mania or hypomania typically lasts for weeks to months and is not always present.

Treatment for Grandiosity

People experiencing grandiosity as a feature of BD may suffer consequences in their personal and professional lives. Grandiosity can make someone seem unforgivably arrogant and rude. This can affect relationships at home, with friends and family, and at work.

Grandiose delusions can impair judgment and compromise the ability to keep or maintain employment. Grandiosity rarely occurs on its own in people with BD. They need medications, psychotherapy, and social support to effectively resolve symptoms, including grandiosity.

If you have symptoms of bipolar mania, your healthcare provider may treat you with a mood stabilizer and sometimes an antipsychotic drug to control your symptoms. If the behaviors are extreme or potentially harmful, hospitalization may be needed until your mood symptoms are under better control.

Final Thoughts

Grandiosity is a trait that can be seen to a mild degree in the general population. However, a sudden jump in self-esteem and sense of self-importance may be indicative of a manic episode in bipolar disorder. This can turn into grandiose delusions or, more rare, delusions of grandeur. High levels of grandiosity can cause you to shift your everyday behaviors and attitudes, causing strife in your relationships and career.

If you or someone you know starts to experience grandiose thought patterns, psychiatric treatment is needed. There is no one drug or psychotherapeutic approach that treats grandiosity on its own. Instead, your healthcare provider will aim to resolve the abnormally heightened mood state that defines bipolar mania. By doing so, behavioral extremes like grandiosity will also be tempered.

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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Additional Reading

• Severus E, Bauer, M. Diagnosing bipolar disorders in DSM-5. Int J Bipolar Dis. 2013;1:14. doi:10.1186/2194-7511-1-14.

By Marcia Purse

Marcia Purse is a mental health writer and bipolar disorder advocate who brings strong research skills and personal experiences to her writing.

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