hallucination vs delusion

hallucination delusion


  • 1) The act of hallucinating; a wandering of the mind; an error, mistake or blunder.
  • 2) A sensory perception of something that does not exist, arising from disorder of the nervous system, as in delirium tremens; a delusion.
  • 3) A false or mistaken idea.
  • 4) The objects or events so perceived.
  • 5) Perception of visual, auditory, tactile, olfactory, or gustatory experiences without an external stimulus and with a compelling sense of their reality, usually resulting from a mental disorder or as a response to a drug.
  • 6) (Med.) The perception of objects which have no reality, or of sensations which have no corresponding external cause, arising from disorder of the nervous system, as in delirium tremens; delusion.
  • 7) The act of hallucinating; a wandering of the mind; error; mistake; a blunder.
  • 8) illusory perception; a common symptom of severe mental disorder
  • 9) a mistaken or unfounded opinion or idea
  • 10) an object perceived during a hallucinatory episode
  • 11) Synonyms Delusion, Illusion (see delusion); phantasm.
  • 12) In pathology and psychology, the apparent perception of some external thing to which no real object corresponds.
  • 13) An unfounded notion; belief in an unreality; a baseless or distorted conception.


  • 1) A false belief that is resistant to confrontation with actual facts.
  • 2) That which is falsely or delusively believed or propagated; false belief; error in belief.
  • 3) The state of being deluded or misled.
  • 4) The act or process of deluding.
  • 5) Psychiatry A false belief or perception that is a manifestation of a mental illness.
  • 6) The state of being deluded.
  • 7) A false belief or opinion.
  • 8) The act of deluding; deception; a misleading of the mind.
  • 9) (psychology) an erroneous belief that is held in the face of evidence to the contrary
  • 10) The act of deluding; a misleading of the mind; deception.
  • 11) The state of being deluded; false impression or belief; error or mistake, especially of a fixed nature: as, his delusion was unconquerable. See the synonyms below.
  • 12) Synonyms Illusion, Delusion, Hallucination. As now technically used, especially by the best authorities in medical jurisprudence, illusion signifies a false mental appearance or conception produced by an external cause acting through the senses, the falsity of which is capable of detection by the subject of it by examination or reasoning. Thus, a mirage, or the momentary belief that a reflection in a mirror is a real object, is an illusion. A delusion is a fixed false mental conception, occasioned by an external object acting upon the senses, but not capable of correction or removal by examination or reasoning. Thus, a fixed belief that an inanimate object is a living person, that all one's friends are conspiring against one, that all food offered is poisoned, and the like, are delusions. A hallucination is a false conception occasioned by internal condition without external cause or aid of the senses, such as imagining that one hears an external voice when there is no sound to suggest such an idea. If a person walking at twilight, seeing a post, should believe it to be a spy pursuing him, and should imagine he saw it move, this would be an illusion; a continuous belief that every person one sees is a spy pursuing one, if such as cannot be removed by evidence, is a delusion; a belief that one sees such spies pursuing, when there is no object in sight capable of suggesting such a thought, is a hallucination. Illusions are not necessarily indications of insanity; delusions and hallucinations, if fixed, are. In literary and popular use an illusion is an unreal appearance presented in any way to the bodily or the mental vision; it is often pleasing, harmless, or even useful. The word delusion expresses strongly the mental condition of the person who puts too great faith in an illusion or any other error: he “labors under a delusion.” A delusion is a mental error or deception, and may have regard to things actually existing, as well as to illusions. Delusions are ordinarily repulsive and discreditable, and may even be mischievous. We speak of the illusiom of fancy, hope, youth, and the like, but of the delusions of a fanatic or a lunatic. A hallucination is the product of an imagination disordered, perhaps beyond the bounds of sanity; a flighty or crazy notion or belief, generally of some degree of permanence; a special aberration of belief as to some specific point: the central suggestion in the word is that of the groundlessness of the belief or opinion.


  • 1) ‘The cannabis user may have a repeat experience of a previous hallucination.’
  • 2) ‘When a person has taken acid they will experience hallucinations and delusions.’
  • 3) ‘Both dreams and hallucinations involve intensive activation of the seeking system.’
  • 4) ‘It wasn't a dream, a hallucination, or a figment of my wild, childish imagination.’
  • 5) ‘They may become incontinent, experience hallucinations and become increasingly unaware of their surroundings.’
  • 6) ‘During these periods of madness, she experienced hallucinations.’
  • 7) ‘In addition there was no evidence of abnormal perception or any auditory hallucinations which had been a feature previously.’
  • 8) ‘If these electric currents are disrupted in any way, it can cause hallucinations and false experiences.’
  • 9) ‘Evidence is what appears to you, even in visions and hallucinations and delusions.’
  • 10) ‘Because what happens when we go to sleep is that our minds become dull and stupid and as a result, we experience a variety of hallucinations.’
  • 11) ‘He said it was not strange for long-distance runners to experience hallucinations on the trail.’
  • 12) ‘The treatment lasted four hours during which I experienced hallucinations and talked to people who have died.’
  • 13) ‘Soon after starting the tramadol, he began to experience auditory hallucinations.’
  • 14) ‘He began experiencing hallucinations and hearing voices telling him to do things.’
  • 15) ‘A hallucination is a sense perception not caused by an external stimulus.’
  • 16) ‘Experiencing a mild hallucination of this sort is a good sign for the biographer, Geoff insists.’
  • 17) ‘Sensory misperceptions, including hallucinations and illusions, are common in delirium.’
  • 18) ‘I realized that paranoid ideas and hallucinations contain a germ of meaning.’
  • 19) ‘Soon, however, it can result in delusions, hallucinations, manic behaviour and extreme mood swings.’
  • 20) ‘He also reported sleep paralysis and hypnagogic hallucinations.’


  • 1) The fact that you thought he was absent was your nightmare, your cross, but it was a delusion.
  • 2) You'll say I was imagining it, hallucinating, my subconscious was playing tricks, a neurotic delusion... I'm not going to argue with you.
  • 3) Many sensed the species ' possibilities within themselves, and whether this was delusion or revelation was impossible to tell.
  • 4) But most of the responses had been triggered by greed, some sort of fantasy delusion, whimsy, or malice.
  • 5) ‘The rise of psychoanalysis did much to validate the contents of mental symptoms, including delusions.’
  • 6) ‘In the paranoid form of this disorder, they develop delusions of persecution or personal grandeur.’
  • 7) ‘LSD can induce a psychotic state with paranoid delusions that can last for months.’
  • 8) ‘I think I mentioned somewhere that delusions are visions of realities not yet activated.’
  • 9) ‘Psychotic patients may have paranoid delusions about their food, leading to reduced intake.’
  • 10) ‘Such a grandiose delusion is common to the consideration of an insanity defense.’
  • 11) ‘He has grandiose delusions and does not want to stay in hospital.’
  • 12) ‘Psychotic delusions, say of being invincible, are a common element of mania.’
  • 13) ‘Is it all a mass delusion, or is there something to it all.’
  • 14) ‘In other words, this was another sensational example of what sociologists call collective delusions.’
  • 15) ‘Narcissism is a noxious mental disease that leads people to grandiose delusions.’
  • 16) ‘The doctors had been aware that he harboured violent delusions.’
  • 17) ‘In some non-Western cultures, schizophrenic delusions single out the person as spiritually gifted.’
  • 18) ‘He was a realistic man who harbored no delusions about immortality.’
  • 19) ‘Schizophrenia, a biological disorder of the brain, is characterised by delusions, hallucinations and thought disorders.’
  • 20) ‘Many are filled with hate and delusions of superiority; some are actually psychotic.’
  • 21) ‘Is this for real, or just a delusion on my part?’
  • 22) ‘No talk show host or publisher invited them to share their delusions with the world.’
  • 23) ‘What did they call it when two people shared a delusion?’
  • 24) ‘The rest of us play along, but no one is fooled by this necessary delusion.’
  • 25) ‘In short, the evidence points more towards hoaxing and delusion than real discovery.’
  • 26) ‘What is deceit or delusion, and what is genuine in this movement?’
  • 27) ‘It took me 15 years to realise that it was a tragic, sickly delusion.’
  • 28) ‘The collapse of idea in Europe may yet be the event that will snap Britain awake from a 30-year delusion.’
  • 29) ‘This is one of the first steps he takes towards differentiating between delusion and fact.’
  • 30) ‘So many of us live in a life of delusion, of separation, of selfishness and of loneliness.’
  • 31) ‘Now mass delusion is not necessarily a bad thing.’

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