Visual Hallucination: Causes & Reasons

Possible Causes for Visual Hallucination

The elementary visual hallucinations detailed cannot be anything else but visual seizures. [jnnp.bmj.com]

Case 1, a 14-year-old boy with weekly episodes of visual hallucinations beginning at age 8, first complained of concentric spherical rings of red and yellow moving from left [pediatricneurologybriefs.com]

More complex visual hallucinations such as seeing formed images are considered a focal cognitive seizure. Focal sensory visual seizures arise in the occipital lobe. [epilepsydiagnosis.org]

Psychosis

The patient spontaneously started to experience psychotic symptoms which included disorganized thinking, delusional thoughts, paranoia, auditory and visual hallucinations. [ncbi.nlm.nih.gov]

If psychosis is caused by a medical condition, the patient may exhibit cognitive changes and abnormal vital signs, and may have visual hallucinations. [ncbi.nlm.nih.gov]

There was marked to moderate improvement (p < 0.01) in measures of visual hallucinations, paranoid delusions, confusion, and the associated global functional impairment in [ncbi.nlm.nih.gov]

Acute Amphetamine Intoxication

In such cases, symptoms of amphetamine psychosis commonly include paranoid and persecutory delusions as well as auditory and visual hallucinations in the presence of extreme [cochrane.org]

LSD Mechanism action at 5-HT receptor Intoxication presentation visual hallucinations and synesthesias ( e.g., seeing sound as color) marked anxiety or depression, delusions [medbullets.com]

In case [ 2 ] we observed a condition characterized by drowsiness, moderate malaise, visual hallucination, and tachyaponea. [omicsonline.org]

Alcohol Hallucinosis

The basis of the syndrome is obscure, and its occurrence during alcohol withdrawal, in association with readily acknowledged visual hallucinations and otherwise preserved [neurology.org]

Webster and Holroyd found visual hallucinations in 27% of 227 delirium patients. 17 Delirium tremens typically is accompanied by visual hallucinations. [mdedge.com]

Symptoms of / Reasons for Organic Hallucinosis Auditory Hallucinations Visual Hallucinations Olfactory Hallucinations Tactile or Physical Hallucinations [gomentor.com]

Organic Hallucination

[…] that occur while falling asleep are A Hypnapompic hallucinations B Hypnagogic hallucinations C Auditory hallucinations D Visual hallucinations 63) Which is the following [gradestack.com]

Eg. visual hallucinations in ‘hysterical psychoses’. 3. [slideshare.net]

Using source localization as a guiding principle, olfactory hallucinations… … Dictionary of Hallucinations visual hallucination — Also referred to as vision. [hallucinations.enacademic.com]

Dementia with Lewy Bodies

[…] that contribute to the manifestation of visual hallucinations in DLB. [ncbi.nlm.nih.gov]

We describe a patient with prodromal dementia with Lewy bodies (DLB) presenting with drug-induced visual hallucinations (VHs). [ncbi.nlm.nih.gov]

Abstract Visual hallucinations (VHs) are among the most striking features of dementia with Lewy bodies (DLB). [ncbi.nlm.nih.gov]

Alcohol Withdrawal Delirium

The present association analysis tested the hypothesis that the A10 candidate allele confers vulnerability to alcohol-withdrawal delirium with visual hallucinations. [ncbi.nlm.nih.gov]

In any modality Often interactive 'Lilliputian visual hallucinations' (miniature humans or animals) are typical Confabulation Seizures Up to 2 days after cessation Generalised [medrevise.co.uk]

Visual hallucinations are most common. [alcorehab.org]

Hallucinogen Delusional Disorder

Hallucinations can occur with any sense and thus be visual, auditory, olfactory, gustatory or tactile. [patient.info]

is a disorder in which a person has flashbacks of visual hallucinations or distortions experienced during a previous hallucinogenic drug experience, sometimes with the [en.wikipedia.org]

For scientific details please visit: EEG coherence in post-LSD visual hallucinations Stable quantitative EEG difference in post-LSD visual disorder by split-half analysis: [amrglobal.powweb.com]

Childhood Schizophrenia

[…] with formal thought disorder, and 37 percent with visual hallucinations. [academic.oup.com]

Hallucinations – An obvious sign is if the child experiences auditory hallucinations (e.g. hearing voices in their head ) and/or experiences visual hallucinations (e.g. sees [mentalhealthdaily.com]

Patients with childhood schizophrenia exhibit similar clinical symptoms as adults with the disorder, but they are less prone to elaborate delusions or visual hallucinations [symptoma.com]

Lysergic Acid Diethylamide Poisoning

If taken in large enough doses, the drug may produce severe delusions and visual hallucinations. [usamdt.com]

True hallucinations occur as well; visual hallucinations are the most common. [emedicine.medscape.com]

hallucinations may range from color intensification or flashes of light to moving geometric or other patterns that can be seen with eyes open or shut The sensation that a [narconon.org]

Focal-Onset Impaired-Awareness Seizure

BACKGROUND: A complex partial seizure can cause a variety of visual system signs and symptoms, including visual hallucinations, dilated pupils, and changes in vision. [ncbi.nlm.nih.gov]

For example, a focal aware seizure from the back of the brain (occipital lobe) may cause a visual hallucination, while a seizure from the side of the brain (temporal lobe) [mountsinai.org]

[…] field defects[9] Visual hallucinations (flashing lights, colors, strange patterns)[2] Can be elementary such as shapes, colors or complex hallucinations such as people, animals [eyewiki.aao.org]

Anticholinergic Toxicity

She had agitation and visual hallucinations. She was showing jerkily moving all extremities and making frequent high-pitched cries. [ispub.com]

hallucinations. [emjournal.net]

This may include: Restlessness / fidgeting /violent behaviour Visual hallucinations Picking at imaginary objects in the air or on the bedsheets Mumbling / slurred speech Fluctuating [rch.org.au]

Hallucinogen Affective Disorder

Organic brain disorder, eg brain tumour, delirium, dementia, visual hallucination due to epileptic activity. [patient.info]

is a disorder in which a person has flashbacks of visual hallucinations or distortions experienced during a previous hallucinogenic drug experience, sometimes with the [en.wikipedia.org]

Relatively small doses of the drug, usually 25 to 80 mcg, bring on sensory alterations and visual hallucinations. [lsdabusehelp.com]

Delirium

Although she exhibited transient visual hallucinations during the delirium, she had no overt dementia. [ncbi.nlm.nih.gov]

While visual hallucinations can occur in patients with primary psychiatric illnesses such as schizophrenia, they are much less common than auditory hallucinations. [aafp.org]

Classic features of delirium tremens such as sympathetic overdrive and visual hallucinations were not salient features of his presentation. [ncbi.nlm.nih.gov]

Hallucinogen Hallucinosis

Each year, some two million people in the United Kingdom experience visual hallucinations. [books.google.de]

(ii) Visual pathway lesions cause defective visual input and may result in hallucinations from defective visual processing or an abnormal cortical release phenomenon. [academic.oup.com]

Webster and Holroyd found visual hallucinations in 27% of 227 delirium patients. 17 Delirium tremens typically is accompanied by visual hallucinations. [mdedge.com]

Narcolepsy-Cataplexy Syndrome

Other features of the full narcolepsy/cataplexy syndrome include sleep paralysis, auditory and/or visual hallucinations and automatic behaviour. [isleephealth.com.au]

We present a 7-year-old girl with ROHHAD who displayed the classic features of narcolepsy with cataplexy: excessive daytime sleepiness with daytime naps, visual hallucinations [pediatrics.aappublications.org]

Hypnagogic hallucinations — Dream-like auditory or visual hallucinations that occur while falling asleep. [medical-dictionary.thefreedictionary.com]

Mescaline

Mescaline produces psychotomimetic effects similar to those produced by LSD: alteration in mood, changes in perception, reveries, visual hallucinations, delusions, depersonalization [medical-dictionary.thefreedictionary.com]

Users typically experience visual hallucinations and radically altered states of consciousness, often experienced as pleasurable and illuminating but occasionally as accompanied [psychology.wikia.com]

See Hallucinogen. mes·ca·line ( mes'kă-lin ) Naturally occurring psychedelic drug in long use, especially in Native American religious ceremonies; produces visual hallucinations [medical-dictionary.thefreedictionary.com]

Hallucinogen Abuse

Many LSD users experience what are called flashbacks, in which their minds briefly replay the visual hallucinations of a previous trip. [healthychildren.org]

This can include abstract, rapidly moving, intensely colored, and vivid visual hallucinations. [drugrehabfl.net]

(most often, visual and auditory hallucinations). [lagunatreatment.com]

Organic Brain Syndrome

Visual hallucinations in consultation-liaison neuropsychiatry. Acta Neuropsychiatrica, Vol. 19, Issue. 06, p. 330. [cambridge.org]

For example, people with Lewy body dementia often have long-lasting visual hallucinations. [medbroadcast.com]

This type of dementia usually progresses quickly and symptoms often include visual hallucinations. [medbroadcast.com]

Parietal Lobe Tumor

Complex visual hallucinations may occur. [epilepsydiagnosis.org]

Visual hallucinations without seizures are strongly suggestive of occipital lesions. [ncbi.nlm.nih.gov]

Visual Illusions and Hallucinations: Patients see objects as too close or too far away, too large or too small, or otherwise not right. [uwhealth.org]

Occipital Lobe Tumor

Visual hallucinations (that may or may not be accompanied by seizures) are some of the most frequent findings, presenting as light flashes consisting of different shapes, [symptoma.com]

Occipital lesions can cause visual hallucinations. [en.wikipedia.org]

More specific: Defects in vision (Visual Field Cuts) Difficulty with locating objects in environment Difficulty with identifying colors (Color Agnosia) Production of hallucinations [braininjury-explanation.com]

Temporal Lobe Epilepsy

In a study published this week in Medical Humanities, the authors feel that temporal lobe epilepsy is a more likely explanation as it can produce complex visual hallucinations [medicalnewstoday.com]

These visual illusions differ from the visual hallucinations associated with occipital lobe seizure in that there is no formed visual image. [patient.info]

Auras may cause sensory, autonomic or psychic symptoms: Somatosensory and special sensory phenomena: Olfactory, auditory and gustatory illusions and hallucinations may occur [patient.info]

Hyperpyrexia

He was disoriented and responding to visual hallucinations. Investigations revealed an elevated creatine kinase and a provisional diagnosis of PHS was made. [ncbi.nlm.nih.gov]

[…] en These include paranoid psychosis, tachycardia, hypertension, diaphoresis, breathing problems, severe agitation, auditory and visual hallucinations, profound anxiety, hyperthermia [sl.glosbe.com]

He had increased tremor and stiffness, profuse sweating, tachypnoea, tachycardia and visual hallucinations. [ejinme.com]

Schizophrenia

She showed severe schizophrenic symptoms such as visual hallucinations for 2 years. [ncbi.nlm.nih.gov]

RESULTS: In group CP, male gender, expansive mood and ideation, derealization/depersonalization, visual hallucinations, and disturbances of sensorium were more frequent than [ncbi.nlm.nih.gov]

He confided in me early on in our relationship that he had schizophrenia, and that his symptoms in the past have included hearing voices, delusions, and some visual hallucinations [reddit.com]

Acute Hepatic Porphyria

hallucinations, mental confusion). [orpha.net]

95% of cases) over one to two weeks, neurological symptoms (muscular weakness, sensory loss or convulsions) and psychological symptoms (irritability, anxiety, auditory or visual [orpha.net]

Brain Neoplasm

Occipital lobes (toward the back of the head, above the cerebellum): Tumors located here can cause partial loss of vision in both eyes, visual hallucinations (seeing things [msdmanuals.com]

[…] aura, visual hallucinations, hemianopia or quadrantanopia (contralateral) Astrocytoma Glioblastoma Oligodendroglioma Parietal lobe Deficits in position sensation and in 2 [merckmanuals.com]

Oligodendroglioma Hypothalamus Eating and drinking disorders (eg, polydipsia), precocious puberty (especially in boys), hypothermia Astrocytoma Occipital lobe Generalized seizures with visual [merckmanuals.com]

Creutzfeldt Jakob Disease

Her symptoms included behavioral change, visual hallucinations, vertigo, and recent falls. [ncbi.nlm.nih.gov]

Features thought to support this diagnosis included psychiatric symptoms (anxiety and depression), visual hallucinations and a visual field defect. [ncbi.nlm.nih.gov]

During the next few weeks, the patient developed cognitive impairment, apraxia, visual hallucinations, and myoclonus. He met diagnostic criteria for CJD. [ncbi.nlm.nih.gov]

Acute Alcohol Intoxication

They may also develop seizures and auditory and visual hallucinations. [patient.info]

The episode may escalate to include fleeting hallucinations, illusions that arouse fear and restlessness, and disorientation with visual hallucinations that may be terrifying [merckmanuals.com]

Patients experience hallucinations, anxiety and a coarse peripheral tremor. On examination, patients may be pyrexial, tachycardic and hypertensive. [patient.info]

Vertebrobasilar Insufficiency

With the further development of the disease have difficulties in swallowing, speech disorders, numbness of the tongue, visual hallucinations, loss of vision, strokes, sudden [back.vsebolezni.com]

hallucinations, and alterations in consciousness.[27] Transient partial ischemia of the posterior circulation due to decreased VB blood flow is known as VB insufficiency [ncbi.nlm.nih.gov]

[…] symptoms (diplopia, visual hallucinations, deficits in the visual field, and blindness); drop attacks (sudden falls secondary to loss of tonus in the lower limbs, without [ncbi.nlm.nih.gov]

Porphyria

hallucinations, mental confusion). [orpha.net]

Psychological symptoms are variable: irritability, emotionality, depression, considerable anxiety and, more rarely, auditory and visual hallucinations, disorientation, mental [orpha.net]

95% of cases) over one to two weeks, neurological symptoms (muscular weakness, sensory loss or convulsions) and psychological symptoms (irritability, anxiety, auditory or visual [orpha.net]