11 doctors weighed in:
What is the difference between delusion, illusion, and hallucination?
11 doctors weighed in

Dr. Seth Kunen
Clinical Psychology
5 doctors agree
In brief: Examples
1. Watching a tv show but tv is off = hallucination.
2. Watching a tv show and believing it is about you when it is not = delusion. 3. Watching tv and incorrectly believing that a character on the show is a relative = illusion.

In brief: Examples
1. Watching a tv show but tv is off = hallucination.
2. Watching a tv show and believing it is about you when it is not = delusion. 3. Watching tv and incorrectly believing that a character on the show is a relative = illusion.
Dr. Seth Kunen
Dr. Seth Kunen
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2 comments
Dr. Alan Ali
Great answer Dr. Kunen ! Thumbs up.
Dr. Seth Kunen
Thank you Dr. Ali . Your many contributions to this website have greatly helped many patients!
Dr. Alan Ali
Psychiatry
4 doctors agree
In brief: Delusion/Hallu.
Delusion is false belief.
Illusion is misinterpretation of a true sensation. Hallucination is perception of non-existing object or event (false perception).

In brief: Delusion/Hallu.
Delusion is false belief.
Illusion is misinterpretation of a true sensation. Hallucination is perception of non-existing object or event (false perception).
Dr. Alan Ali
Dr. Alan Ali
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Dr. Douglas Bey
Psychiatry
1 doctor agrees
In brief: Stimulus/belief
Hallucination is false perception--illusion is a misperceptions --delusion is a false belief that is not altered by logic.

In brief: Stimulus/belief
Hallucination is false perception--illusion is a misperceptions --delusion is a false belief that is not altered by logic.
Dr. Douglas Bey
Dr. Douglas Bey
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Dr. Douglas Bey
Psychiatry
1 doctor agrees
In brief: Stimulus
Hallucination is a false perception while an illusion is a misperceptions of a real stimulus--hearing voices with no stimulus is a hallucination misinterpreting the sound of the radiator as voices is an illusion.

In brief: Stimulus
Hallucination is a false perception while an illusion is a misperceptions of a real stimulus--hearing voices with no stimulus is a hallucination misinterpreting the sound of the radiator as voices is an illusion.
Dr. Douglas Bey
Dr. Douglas Bey
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1 comment
Dr. Douglas Bey
Delusion is a false belief that isn't altered by logic.
Dr. Andrew Berry
Clinical Psychology
In brief: Different
A delusion is something that in theory can happen, but is not very likely an example of this would be a patient who says that Cindy Crawford is in love with them. That's a delusion.
An illusion can be thought of in terms of tricks that a magician performs. Hallucinations are defined as stimuli that come from the environment that affect our five senses, but do not exist at all in reality.

In brief: Different
A delusion is something that in theory can happen, but is not very likely an example of this would be a patient who says that Cindy Crawford is in love with them. That's a delusion.
An illusion can be thought of in terms of tricks that a magician performs. Hallucinations are defined as stimuli that come from the environment that affect our five senses, but do not exist at all in reality.
Dr. Andrew Berry
Dr. Andrew Berry
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