HEALTH ENCYCLOPEDIA

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Delusions

What Are Delusions?

Delusions are beliefs or ideas that are thoroughly believed to be true, despite being demonstrably false. Often, delusions are symptoms of mental disorders, such as schizophrenia and bipolar disorder. A person with a delusion cannot be convinced that his or her false belief is not true.

Delusions are symptoms of several psychotic disorders: schizophrenia, schizoaffective disorder, delusional disorder, disorder, shared psychotic disorder, brief psychotic disorder, substance-induced psychotic disorder, bipolar disorder, and depression with psychosis. Delusions are also present in some people who have Alzheimer’s disease or dementia.

Delusions may also represent a decline in a person with Parkinson’s condition (though they are rare).


Content licensed from:

Written by: Joe Bowman
Medically reviewed on: Jan 28, 2014: George Krucik, MD, MBA

This feature is for informational purposes only and should not be used to replace the care and information received from your health care provider. Please consult a health care professional with any health concerns you may have.
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