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by Alan R


Hundreds of underlying causes can result in delirium. Some of the most common causes include:
Brain Tumor
Brain Tumor
Just one of many potential causes of delirium.
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Risk Factors

These factors increase your chance of developing delirium:


The doctor will ask about your symptoms and medical history. A physical exam will be done and the doctor will ask you questions. The doctor will ask specific questions about:
  • Present injury or illness
  • Use of medicines or illicit drugs
  • Time when mental state changed
  • How and how fast the mental state changed
The diagnosis will be made based on what the doctor finds during the exam. To determine a cause your doctor may need to run several tests such as:
Images of internal organs may also help to determine a cause. Images may be taken with:


American Psychiatric Association

National Institute of Mental Health



Canadian Psychiatric Association

Canadian Psychological Association



Delirium. EBSCO DynaMed website. Available at: . Updated May 12, 2013. Accessed June 11, 2013.

Gleason O. Delirium. American Academy of Family Physicians website. Am Fam Physician. 2003 Mar 1;67(5):1027. Available at: . Accessed June 11, 2013.


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