Advertisement

What is the difference between an illusion and a hallucination?

Dr. Michael Roizen, MD
Internal Medicine
An illusion is simply a misinterpretation of data that the brain is receiving—perhaps caused by light being refracted in an odd way. A hallucination, on the other hand, isn't based on any kind of reality. As an example, people with cataracts tend to see illusions, hallucinations.
You: Staying Young: The Owner's Manual for Extending Your Warranty

More About this Book

You: Staying Young: The Owner's Manual for Extending Your Warranty

International bestselling authors of YOU: The Owner's Manual and YOU: On a Diet give you all the tools and know-how to stay young and defy the ageing process. Drawing lively parallels between your...

Continue Learning about Mental Disorders

What You Need to Know About Misophonia
What You Need to Know About Misophonia
Does the sound of someone chewing food or even hearing them breathe bother you—​alot? You may have a condition called misophonia. Also known as select...
Read More
Are there support groups for veterans with adjustment disorder?
Challenge AmericaChallenge America
Veterans can locate support groups for military-related health issues through the Department of Vete...
More Answers
What mental disorders are similar to schizophrenia?
Douglas E. Severance, MDDouglas E. Severance, MD
Many mental health disorders share some similar symptoms with schizophrenia. Some personality di...
More Answers
How Does an MRI Help with Diagnosing Mental Disorders?
How Does an MRI Help with Diagnosing Mental Disorders?

Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.