keyword
MENU ▼
Read by QxMD icon Read
search

Visual hallucination

keyword
https://www.readbyqxmd.com/read/28088312/dementia-in-parkinson-s-disease
#1
REVIEW
Hasmet A Hanagasi, Zeynep Tufekcioglu, Murat Emre
Dementia can occur in a substantial number of patients with Parkinson's disease with a point prevalence close to 30%. The cognitive profile is characterized by predominant deficits in executive, visuospatial functions, attention and memory. Behavioral symptoms are frequent such as apathy, visual hallucinations and delusions. The most prominent associated pathology is Lewy body-type and biochemical deficit is cholinergic. Placebo-controlled randomized trials with cholinesterase inhibitors demonstrated modest but significant benefits in cognition, behavioral symptoms and global functions...
January 5, 2017: Journal of the Neurological Sciences
https://www.readbyqxmd.com/read/28067106/retrospective-neuropsychological-profile-of-patients-with-parkinson-disease-prior-to-developing-visual-hallucinations
#2
Alana J Muller, Claire O'Callaghan, Courtney C Walton, James M Shine, Simon J G Lewis
Visual hallucinations (VH) are a common feature of Parkinson disease (PD); however, the cognitive profile preceding the onset of VH has not yet been established. The present study investigated longitudinal neuropsychological performance of patients with PD who developed VH during follow-up compared to a group who did not develop VH. The patient groups were matched for demographic and disease severity variables at their baseline assessments. Patients who developed VH displayed impaired performance at baseline on measures of psychomotor speed, executive functioning, reaction time, and attention compared to patients who did not develop VH...
January 1, 2017: Journal of Geriatric Psychiatry and Neurology
https://www.readbyqxmd.com/read/28059471/specific-patterns-of-neuronal-loss-in-the-pulvinar-nucleus-in-dementia-with-lewy-bodies
#3
Daniel Erskine, Alan J Thomas, Johannes Attems, John-Paul Taylor, Ian G McKeith, Christopher M Morris, Ahmad A Khundakar
BACKGROUND: Complex visual hallucinations occur in 70%-80% of dementia with Lewy bodies patients and significantly affect well-being. Despite the prevalence of visual hallucinations in dementia with Lewy bodies, the neuropathological basis of this phenomenon is poorly understood. The pulvinar nucleus of the thalamus has not previously been neuropathologically examined, but has been linked to visual hallucinations in dementia with Lewy bodies. The objective of this study was to investigate whether neuropathological or morphometric changes occur in the pulvinar nucleus in dementia with Lewy bodies cases that may contribute to visual hallucinations...
January 6, 2017: Movement Disorders: Official Journal of the Movement Disorder Society
https://www.readbyqxmd.com/read/28047652/su-f-sps-07-magnetic-resonance-spectroscopy-findings-in-early-phase-psychosis
#4
A Wright, R Ma, T Hummer, M Francis, N Mehdiyoun, U Dydak, A Breier
PURPOSE: Schizophrenia is a psychiatric disorder characterized by disordered thoughts, abnormal social behaviors, flat affect, and auditory or visual hallucinations. The current study aims to investigate alterations in brain metabolism in patients near the onset of psychosis (early-phase psychosis, EPP), to characterize abnormalities during the early stages of schizophrenia. To this end, we used magnetic resonance imaging (MRI) and spectroscopy (MRS) to measure metabolite levels and subsequently monitor the effect of treatment with N-acetylcysteine (NAC)...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28038923/charles-bonnet-syndrome-in-a-child-with-congenital-glaucoma
#5
E Santos-Bueso, M Serrador-García, F Sáenz-Francés, C Méndez-Hernández, L Morales-Fernández, J M Martínez-de-la-Casa, J García-Feijoo, J Porta-Etessam
CASE REPORT: The case is presented of a 12 year-old boy with congenital glaucoma and low visual acuity diagnosed with Charles Bonnet syndrome. This consisted of the acute onset of complex, repetitive, persistent, and with visual hallucinations (people, brooms and coffeemakers) of self-limited evolution without treatment. The patient was diagnosed with congenital glaucoma at 3 years of age, and subjected to a trabeculectomy in right eye, and trabeculectomy and keratoplasty in his left eye...
December 27, 2016: Archivos de la Sociedad Española de Oftalmología
https://www.readbyqxmd.com/read/27984353/reversible-charles-bonnet-syndrome-after-oculoplastic-procedures
#6
Robert A Beaulieu, Diana A Tamboli, Blair K Armstrong, R Nick Hogan, Ronald Mancini
Individuals with Charles Bonnet syndrome (CBS) typically have severe visual loss and experience visual hallucinations yet have no psychiatric disease. Visual impairment often is due to end-stage glaucoma or macular degeneration. We report 3 cases of CBS in patients who underwent an oculoplastic surgical procedure. One patient experienced binocular visual distortion due to excessive topical ophthalmic ointment, and 2 patients experienced monocular visual impairment from patching. Visual hallucinations resolved once vision returned to baseline...
December 14, 2016: Journal of Neuro-ophthalmology: the Official Journal of the North American Neuro-Ophthalmology Society
https://www.readbyqxmd.com/read/27969087/forced-normalization-an-overlooked-entity-in-epileptic-patients
#7
Andac Topkan, Sule Bilen, Ayse Pinar Titiz, Esra Eruyar, Fikri Ak
The "forced normalization" phenomenon is characterized by acute/subacute onset of psychotic symptoms in the early post-ictal period with dramatic improvement of electrophysiological epileptiform activity. A 56 years old female with going on personality changes, maladaptive behaviours and a mild cognitive impairment since last seizure which was forty-five days ago has been admitted. An evident increase was observed in her maladaptive behaviours with the use of levetiracetam. She began describing visual hallucinations and déjàvu...
October 2016: Asian Journal of Psychiatry
https://www.readbyqxmd.com/read/27969065/cross-cultural-variations-in-psychiatrists-perception-of-mental-illness-a-tool-for-teaching-culture-in-psychiatry
#8
Jhilam Biswas, B N Gangadhar, Matcheri Keshavan
A frequent debate in psychiatry is to what extent major psychiatric diagnoses are universal versus unique across cultures. We sought to identify cultural variations between psychiatrists' diagnostic practices of mental illness in Boston Massachusetts and Bangalore, India. We surveyed psychiatrists to identify differences in how frequently symptoms appear in major mental illness in two culturally and geographically different cities. Indian psychiatrists found somatic symptoms like pain, sleep and appetite to be significantly more important in depression and violent and aggressive behavior to be significantly more common in mania than did American psychiatrists...
October 2016: Asian Journal of Psychiatry
https://www.readbyqxmd.com/read/27906088/folie-%C3%A3-deux-and-its-interaction-with-early-life-stress-a-case-report
#9
Alessandra Vargas Alves Nunes, Sandra Odebrecht Vargas Nunes, Talita Strano, Gilberto Pascolat, Gustavo Manoel Schier Doria, Mauricio Nasser Ehlke
BACKGROUND: Folie à deux is a very rare psychiatric syndrome in which a psychotic symptom is transmitted from one individual to another. We present a case of folie à deux occurring during childhood, which is not an usual presentation of this syndrome. In this case, the disorder is correlated with child abuse and neglect, which possibly had a role in the development of the symptoms in our case. CASE PRESENTATION: We present a case of folie à deux between an "induced" 9-year-old black Brazilian boy and the "inducer", his grandmother...
December 1, 2016: Journal of Medical Case Reports
https://www.readbyqxmd.com/read/27905557/hallucinations-in-schizophrenia-and-parkinson-s-disease-an-analysis-of-sensory-modalities-involved-and-the-repercussion-on-patients
#10
P M Llorca, B Pereira, R Jardri, I Chereau-Boudet, G Brousse, D Misdrahi, G Fénelon, A-M Tronche, R Schwan, C Lançon, A Marques, M Ulla, P Derost, B Debilly, F Durif, I de Chazeron
Hallucinations have been described in various clinical populations, but they are neither disorder nor disease specific. In schizophrenia patients, hallucinations are hallmark symptoms and auditory ones are described as the more frequent. In Parkinson's disease, the descriptions of hallucination modalities are sparse, but the hallucinations do tend to have less negative consequences. Our study aims to explore the phenomenology of hallucinations in both hallucinating schizophrenia patients and Parkinson's disease patients using the Psycho-Sensory hAllucinations Scale (PSAS)...
December 1, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27900674/serotonergic-hallucinogen-induced-visual-perceptual-alterations
#11
Michael Kometer, Franz X Vollenweider
Serotonergic hallucinogens, such as lysergic acid diethylamide (LSD), psilocybin, and N,N-dimethyltryptamine (DMT), are famous for their capacity to temporally and profoundly alter an individual's visual experiences. These visual alterations show consistent attributes despite large inter- and intra-individual variances. Many reports document a common perception of colors as more saturated, with increased brightness and contrast in the environment ("Visual Intensifications"). Environmental objects might be altered in size ("Visual illusions") or take on a modified and special meaning for the subject ("Altered self-reference")...
November 30, 2016: Current Topics in Behavioral Neurosciences
https://www.readbyqxmd.com/read/27899123/a-functional-magnetic-resonance-imaging-investigation-of-visual-hallucinations-in-the-human-striate-cortex
#12
Hina Abid, Fayyaz Ahmad, Soo Y Lee, Hyun W Park, Dongmi Im, Iftikhar Ahmad, Safee U Chaudhary
PURPOSE: Human beings frequently experience fear, phobia, migraine and hallucinations, however, the cerebral mechanisms underpinning these conditions remain poorly understood. Towards this goal, in this work, we aim to correlate the human ocular perceptions with visual hallucinations, and map them to their cerebral origins. METHODS: An fMRI study was performed to examine the visual cortical areas including the striate, parastriate and peristriate cortex in the occipital lobe of the human brain...
November 29, 2016: Behavioral and Brain Functions: BBF
https://www.readbyqxmd.com/read/27897064/diagnosis-of-dementia-with-lewy-bodies-can-123-i-imp-and-123-i-mibg-scintigraphy-yield-new-core-features
#13
Fumi Sakamoto, Shinya Shiraishi, Noriko Tsuda, Mamoru Hashimoto, Seiji Tomiguchi, Manabu Ikeda, Yasuyuki Yamashita
OBJECTIVE: Since the clinical symptoms of different types of dementia frequently overlap, especially in the earlier stages at onset, it is difficult to distinguish dementias with Lewy bodies (DLB) from other neurodegenerative dementias based on their clinical manifestations alone. Nuclear medicine imaging has been reported as a high-value index for the objective evaluation and diagnosis of DLB. The aim of this study was to evaluate whether nuclear medicine imaging findings may yield core features to be added to the diagnosis of DLB...
November 29, 2016: British Journal of Radiology
https://www.readbyqxmd.com/read/27878523/intravenous-ketamine-for-subacute-treatment-of-refractory-chronic-migraine-a-case-series
#14
Clinton Lauritsen, Santiago Mazuera, Richard B Lipton, Sait Ashina
BACKGROUND: Refractory migraine is a challenging condition with great impact on health related quality of life. Intravenous (IV) ketamine has been previously used to treat various refractory pain conditions. We present a series of patients with refractory migraine treated with intravenous ketamine in the hospital setting. METHODS: Based on retrospective chart review, we identified six patients with refractory migraine admitted from 2010 through 2014 for treatment with intravenous ketamine...
December 2016: Journal of Headache and Pain
https://www.readbyqxmd.com/read/27872259/hallucinations-a-systematic-review-of-points-of-similarity-and-difference-across-diagnostic-classes
#15
Flavie Waters, Charles Fernyhough
Hallucinations constitute one of the 5 symptom domains of psychotic disorders in DSM-5, suggesting diagnostic significance for that group of disorders. Although specific featural properties of hallucinations (negative voices, talking in the third person, and location in external space) are no longer highlighted in DSM, there is likely a residual assumption that hallucinations in schizophrenia can be identified based on these candidate features. We investigated whether certain featural properties of hallucinations are specifically indicative of schizophrenia by conducting a systematic review of studies showing direct comparisons of the featural and clinical characteristics of (auditory and visual) hallucinations among 2 or more population groups (one of which included schizophrenia)...
November 21, 2016: Schizophrenia Bulletin
https://www.readbyqxmd.com/read/27865819/buzz-juice-neurological-sequelae-of-synthetic-cannabinoids
#16
Manisha Kak, Fadi Mikhail, Sho T Yano, Rui Guan, Rimas V Lukas
The use of synthetic cannabinoids is becoming more widespread. Familiarity with the potential toxicities associated with these agents will grow in importance. We present a case of a woman who developed onset of confusion, visual hallucinations, and ataxia after vaporizing synthetic cannabinoids. MRI imaging demonstrated restricted diffusion and increased T2/FLAIR signal in the corpus callosum and cerebellar peduncles.
November 16, 2016: Journal of Clinical Neuroscience: Official Journal of the Neurosurgical Society of Australasia
https://www.readbyqxmd.com/read/27855483/prediction-of-relapse-after-discontinuation-of-antipsychotic-treatment-in-alzheimer-s-disease-the-role-of-hallucinations
#17
Anjali N Patel, Seonjoo Lee, Howard F Andrews, Gregory H Pelton, Susan K Schultz, David L Sultzer, Jacobo Mintzer, Danilo de la Pena, Sanjay Gupta, Sylvia Colon, Corbett Schimming, Bruce Levin, D P Devanand
OBJECTIVE: In Alzheimer's disease, antipsychotic medications are often used for a period, with relief of symptoms, and then discontinued, after which relapse may occur. The authors sought to determine which neuropsychiatric symptoms predict relapse. METHOD: In the Antipsychotic Discontinuation in Alzheimer's Disease trial, 180 patients with Alzheimer's disease and symptoms of agitation or psychosis were treated with risperidone for 16 weeks, after which patients who responded (N=110) were randomly assigned to continue risperidone for 32 weeks, to continue risperidone for 16 weeks followed by switch to placebo for 16 weeks, or to receive placebo for 32 weeks...
November 18, 2016: American Journal of Psychiatry
https://www.readbyqxmd.com/read/27823833/prevalence-and-risk-factors-for-visual-hallucinations-in-chinese-patients-with-parkinson-s-disease
#18
Jun Zhu, Bo Shen, Liyu Lu, Wenya Lan, Yang Pan, Lili Zhang, Jingde Dong, Min Wang, Li Zhang
BACKGROUND AND PURPOSE: Parkinson's disease (PD) patients frequently present visual hallucinations (VHs)·The determinants of VHs in Chinese PD patients remain largely unknown. The aim of this study was to illuminate the prevalence and clinical correlates of VHs in the Chinese population with PD. METHODS: A total of 371 consecutive, idiopathic PD patients were recruited into the study. Patients were categorized as hallucinators and nonhallucinators according to Movement Disorder Society-sponsored revision of the Unified Parkinson's Disease Rating Scale (MDS-UPDRS)...
January 15, 2017: Journal of the Neurological Sciences
https://www.readbyqxmd.com/read/27797817/self-disembowelment-during-delirium-tremens-why-early-diagnosis-is-vital
#19
Rachel Thomasson, Vanessa Craig, Elspeth Guthrie
Delirium tremens is a serious yet treatable complication of alcohol withdrawal. Timely diagnosis is critical as there are well-established treatment regimens that provide symptomatic relief within hours to days. We report the case of a 34-year-old man with an undisclosed history of alcohol dependency. He presented with paranoid beliefs and was transferred to a psychiatric inpatient unit with suspected schizophrenia. Classic features of delirium tremens such as sympathetic overdrive and visual hallucinations were not salient features of his presentation...
October 24, 2016: BMJ Case Reports
https://www.readbyqxmd.com/read/27790244/detection-of-low-signal-pulvinar-areas-using-diffusion-weighted-imaging-in-patients-with-dementia-experiencing-visual-hallucinations
#20
Mayuko Sugiura, Masayuki Satoh, Ken-Ichi Tabei, Tomoki Saito, Mutsuki Mori, Makiko Abe, Hirotaka Kida, Masayuki Maeda, Hajime Sakuma, Hidekazu Tomimoto
BACKGROUND: Little research has been conducted regarding the role of pulvinar nuclei in the pathogenesis of visual hallucinations due to the difficulty of assessing abnormalities in this region using conventional magnetic resonance imaging (MRI). The present study aimed to retrospectively investigate the relative abilities of diffusion-weighted imaging (DWI), fluid-attenuated inversion recovery (FLAIR), and susceptibility-weighted imaging (SWI) to visualize the pulvinar and to ascertain the relationship between pulvinar visualization and visual hallucinations...
September 2016: Dementia and Geriatric Cognitive Disorders Extra
keyword
keyword
40631
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"