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Visual hallucinations

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https://www.readbyqxmd.com/read/28332250/visual-hallucinations-in-patients-with-acute-stroke-a-prospective-exploratory-study
#1
E Morenas-Rodríguez, P Camps-Renom, A Pérez-Cordón, A Horta-Barba, M Simón-Talero, E Cortés-Vicente, D Guisado-Alonso, E Vilaplana, C García-Sánchez, A Gironell, C Roig, R Delgado-Mederos, J Martí-Fàbregas
BACKGROUND AND PURPOSE: The incidence, underlying physiopathology, features and association with lesion topography of visual hallucinations in acute stroke have scarcely been investigated. METHODS: Patients with a diagnosis of acute stroke (ischaemic or haemorrhagic) in any vascular territory, admitted within 24 h after the onset of symptoms, were consecutively included in the study. Patients with a previous history of psychosis or cognitive impairment were excluded...
March 22, 2017: European Journal of Neurology: the Official Journal of the European Federation of Neurological Societies
https://www.readbyqxmd.com/read/28326948/rare-presentation-of-intrathecal-morphine-withdrawal-psychosis
#2
Rohit Aiyer, Vivek Jain, Anurag Bhatia, Boris Mekinulov, Semih Gungor
We report a case of a 57-year-old male patient with intrathecal morphine pump failure who presented with psychosis as part of a clinical presentation of opioid withdrawal. The patient was being treated for chronic back pain with an intrathecal morphine pump for several years. The patient spontaneously started to experience psychotic symptoms which included disorganized thinking, delusional thoughts, paranoia, auditory and visual hallucinations. Upon interrogation of intrathecal pump, it was found not to be functioning, thereby not delivering intrathecal morphine...
February 28, 2017: Pain Management
https://www.readbyqxmd.com/read/28315846/risk-factors-for-early-psychosis-in-pd-insights-from-the-parkinson-s-progression-markers-initiative
#3
Dominic H Ffytche, Joana B Pereira, Clive Ballard, K Ray Chaudhuri, Daniel Weintraub, Dag Aarsland
BACKGROUND: Parkinson's Disease (PD) psychosis refers to the spectrum of illusions, formed hallucinations and delusions that occur in PD. Visual hallucinations and illusions are thought to be caused by specific cognitive and higher visual function deficits and patients who develop such symptoms early in the disease course have greater rates of cognitive decline and progression to dementia. To date, no studies have investigated whether such deficits are found prior to the onset of PD psychosis...
April 2017: Journal of Neurology, Neurosurgery, and Psychiatry
https://www.readbyqxmd.com/read/28314070/long-lasting-effects-of-chronic-heavy-cannabis-abuse
#4
Joannis N Nestoros, Elena Vakonaki, Manolis N Tzatzarakis, Athanasios Alegakis, Markos D Skondras, Aristidis M Tsatsakis
BACKGROUND AND OBJECTIVES: The purpose of this study was to evaluate the extent of short-term memory impairment and schizophrenia-like symptoms in heavy and systematic cannabis users and the association between the severity of abuse and the longevity of its persistent symptoms after refraining from such use. METHODS: A complete psychiatric examination and a psychometric evaluation were performed in 48 solely cannabis users. Additionally, head hair samples were analyzed and the detected cannabinoids levels were correlated with the psychometric findings...
March 17, 2017: American Journal on Addictions
https://www.readbyqxmd.com/read/28295599/gender-difference-in-the-association-and-presentation-of-visual-hallucinations-in-dementia-with-lewy-bodies-a-cross-sectional-study
#5
Pai-Yi Chiu, Po-Ren Teng, Cheng-Yu Wei, Chein-Wei Wang, Chun-Tang Tsai
OBJECTIVE: Visual hallucinations (VHs) are among the most striking features of dementia with Lewy bodies (DLB). We investigated gender differences in the association and presentation of VHs in DLB. METHODS: A cross-sectional analysis of baseline data from a prospective, longitudinal study on dementia was performed. Cumulative frequency, 1-month frequency, and phenomenology of VHs were summarized and compared between female and male patients with DLB. Gender differences in the factors associated with VHs were investigated in patients with and without hallucinations...
March 13, 2017: International Journal of Geriatric Psychiatry
https://www.readbyqxmd.com/read/28294710/behavioral-disconnection-syndrome-manifesting-as-combined-mania-and-visual-auditory-hallucinations-secondary-to-isolated-right-thalamic-hemorrhage
#6
Parunyou Julayanont, Doungporn Ruthirago, Khondoker Alam, Yazan J Alderazi
No abstract text is available yet for this article.
March 15, 2017: Journal of Neuropsychiatry and Clinical Neurosciences
https://www.readbyqxmd.com/read/28289175/teaching-neuroimages-a-spiritual-visual-hallucination-from-a-right-parieto-occipital-seizure-ictal-guardian-angel
#7
Victoria S S Wong, Marissa A Kellogg
No abstract text is available yet for this article.
March 14, 2017: Neurology
https://www.readbyqxmd.com/read/28287968/style-transfer-via-texture-synthesis
#8
Michael Elad, Peyman Milanfar
Style transfer is a process of migrating a style from a given image to the content of another, synthesizing a new image which is an artistic mixture of the two. Recent work on this problem adopting Convolutional Neural-networks (CNN) ignited a renewed interest in this field, due to the very impressive results obtained. There exists an alternative path towards handling the style transfer task, via generalization of texture synthesis algorithms. This approach has been proposed over the years, but its results are typically less impressive compared to the CNN ones...
March 8, 2017: IEEE Transactions on Image Processing: a Publication of the IEEE Signal Processing Society
https://www.readbyqxmd.com/read/28285770/visual-hallucinations-in-neurodegenerative-diseases-focus-on-selective-tissue-vulnerability
#9
EDITORIAL
Jared T Hinkle, Gregory M Pontone
No abstract text is available yet for this article.
February 14, 2017: American Journal of Geriatric Psychiatry
https://www.readbyqxmd.com/read/28284903/ocular-and-visual-disorders-in-parkinson-s-disease-common-but-frequently-overlooked
#10
REVIEW
Merel S Ekker, Sabine Janssen, Klaus Seppi, Werner Poewe, Nienke M de Vries, Thomas Theelen, Jorik Nonnekes, Bastiaan R Bloem
Patients with Parkinson's disease (PD) often compensate for their motor deficits by guiding their movements visually. A wide range of ocular and visual disorders threatens the patients' ability to benefit optimally from visual feedback. These disorders are common in patients with PD, yet they have received little attention in both research and clinical practice, leading to unnecessary - but possibly treatable - disability. Based on a literature search covering 50 years, we review the range of ocular and visual disorders in patients with PD, and classify these according to anatomical structures of the visual pathway...
February 21, 2017: Parkinsonism & related Disorders
https://www.readbyqxmd.com/read/28282630/differences-in-the-symptom-profile-of-methamphetamine-related-psychosis-and-primary-psychotic-disorders
#11
Rebecca McKetin, Amanda L Baker, Sharon Dawe, Alexandra Voce, Dan I Lubman
We examined the lifetime experience of hallucinations and delusions associated with transient methamphetamine-related psychosis (MAP), persistent MAP and primary psychosis among a cohort of dependent methamphetamine users. Participants were classified as having (a) no current psychotic symptoms, (n=110); (b) psychotic symptoms only when using methamphetamine (transient MAP, n=85); (c) psychotic symptoms both when using methamphetamine and when abstaining from methamphetamine (persistent MAP, n=37), or (d) meeting DSM-IV criteria for lifetime schizophrenia or mania (primary psychosis, n=52)...
February 13, 2017: Psychiatry Research
https://www.readbyqxmd.com/read/28273630/occurrence-and-co-occurrence-of-hallucinations-by-modality-in-schizophrenia-spectrum-disorders
#12
Simon McCarthy-Jones, David Smailes, Aiden Corvin, Michael Gill, Derek W Morris, Timothy G Dinan, Kieran C Murphy, F Anthony O Neill, John L Waddington, Australian Schizophrenia Research Bank, Gary Donohoe, Robert Dudley
It is not only unclear why hallucinations in schizophrenia occur with different prevalence by modality, but also to what extent they do. Reliable prevalence estimates of hallucinations by modality in schizophrenia are currently lacking, particularly for non-auditory hallucinations. Studies have also tended to report lifetime, not point prevalence by modality. This study assessed the prevalence and co-occurrence of hallucinations, for both lifetime and point prevalence, across the auditory, visual, olfactory, and tactile modalities, in people diagnosed with chronic schizophrenia-spectrum disorders in Ireland (N=693) and Australia (N=218)...
February 24, 2017: Psychiatry Research
https://www.readbyqxmd.com/read/28272261/abnormal-parietal-encephalomalacia-associated-with-schizophrenia-a-case-report
#13
Fen Pan, Jun-Yuan Wang, Yi Xu, Man-Li Huang
RATIONALE: It is widely believed that structural abnormalities of the brain contribute to the pathophysiology of schizophrenia. The parietal lobe is a central hub of multisensory integration, and abnormities in this region might account for the clinical features of schizophrenia. However, few cases of parietal encephalomalacia associated with schizophrenia have been described. PATIENT CONCERNS AND DIAGNOSES: In this paper, we present a case of a 25-year-old schizophrenia patient with abnormal parietal encephalomalacia...
March 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28263800/the-role-of-the-retina-in-visual-hallucinations-a-review-of-the-literature-and-implications-for-psychosis
#14
REVIEW
Florent Bernardin, Raymund Schwan, Laurence Lalanne, Fabienne Ligier, Karine Angioi-Duprez, Thomas Schwitzer, Vincent Laprevote
Visual hallucinations are a psychotic symptom present in numerous clinical conditions such as eye disease, Parkinsonian syndromes, neurodegenerative disorders and psychosis. Alteration of low level visual processing is a common feature in these clinical conditions, and various stages of processing from the retina to visual cortices are involved. We undertook a literature review of abnormalities of the retina and their potential link with the occurrence of VHs in these clinical conditions of interest. We found that structural and functional abnormalities of the retina are frequently present...
March 2, 2017: Neuropsychologia
https://www.readbyqxmd.com/read/28263626/predisposition-to-out-of-body-experience-obe-is-associated-with-aberrations-in-multisensory-integration-psychophysiological-support-from-a-rubber-hand-illusion-study
#15
Jason J Braithwaite, Derrick G Watson, Hayley Dewe
It has been argued that disorders in body-ownership and aberrant experiences in self-consciousness are due to biases in multisensory integration. Here we examine whether such biases are also associated with spontaneous out-of-body experiences (OBEs) in a nonclinical population. One-hundred and 80 participants took part in a rubber hand illusion (RHI) experiment with synchronous and asynchronous visual and tactile stimulation. A realistic threat was delivered to the rubber hand after a fixed period of stimulation...
March 6, 2017: Journal of Experimental Psychology. Human Perception and Performance
https://www.readbyqxmd.com/read/28262407/anti-n-methyl-d-aspartate-receptor-encephalitis-associated-with-hepatic-neuroendocrine-carcinoma-a-case-report
#16
Ee Wei Lim, Chun Wai Yip
Anti-N-methyl-D-aspartate receptor (Anti-NMDAR) encephalitis can present with and without tumor. Tumor associations are less common in older patients. We report a 65-year-old gentleman who presented with one week history of cough, chills, rigor and altered behavior, followed by florid visual and auditory hallucinations. Mini mental status examination score was 16/30. Both cerebrospinal fluid and plasma anti-NMDA receptor antibodies were detected. A course of intravenous methylprednisolone was given with partial symptom improvement...
March 2, 2017: Journal of Clinical Neuroscience: Official Journal of the Neurosurgical Society of Australasia
https://www.readbyqxmd.com/read/28260524/clomiphene-citrate-induced-visual-hallucinations-a-case-report
#17
Ramesh Venkatesh, Gaganjeet Singh Gujral, Prachi Gurav, Shailja Tibrewal, Umang Mathur
BACKGROUND: Polycystic ovary syndrome is a common cause of chronic anovulation and infertility in otherwise healthy fertile couples. Clomiphene citrate is used as a first-line ovulation induction therapy in patients with polycystic ovary syndrome. Clomiphene citrate can cause both systemic and ocular side effects. We report a rare side effect of illusory palinopsias in a patient with polycystic ovary syndrome treated with ovulation induction therapy with clomiphene citrate, and emphasize the need for gynecologists and their patients to be aware of this rare ocular side effect...
March 6, 2017: Journal of Medical Case Reports
https://www.readbyqxmd.com/read/28255419/delirium-following-fesoterodine-treatment-for-urgency-incontinence-in-an-89-year-old-man
#18
Jeannie Medeiros Charbonneau, Rania Bisset, Patrick Viet-Quoc Nguyen
We describe the case of an 89-year-old man who developed delirium following the introduction of fesoterodine to treat his urgency incontinence. The patient started experiencing visual hallucinations approximately five days after starting fesoterodine 4 mg once daily. Delirium resolved after fesoterodine was stopped. Despite the apparent safe cognitive profile due to its pharmacodynamic properties, fesoterodine should be used with caution in the elderly, frail population.
July 2016: Canadian Urological Association Journal, Journal de L'Association des Urologues du Canada
https://www.readbyqxmd.com/read/28253276/clinical-and-neuroimaging-characteristics-of-chinese-dementia-with-lewy-bodies
#19
Shuai Liu, Xiao-Dan Wang, Ying Wang, Zhihong Shi, Li Cai, Shuling Liu, Tong Han, Yuying Zhou, Xinping Wang, Shuo Gao, Yong Ji
Dementia with Lewy bodies (DLB) is the second most common subtype of degenerative dementia. To our knowledge, available information about the clinical features of DLB in China remains limited. Our study therefore aimed to address this issue. Thirty-seven Chinese patients with probable DLB were recruited for this study. All subjects underwent neuropsychological assessment by trained neurologists, as well as undergoing MRI, 11C-PIB PET scans for Aβ deposition and 18F-FDG PET scans for regional cerebral glucose metabolism...
2017: PloS One
https://www.readbyqxmd.com/read/28242149/-hallucinations-etiological-analysis-of-children-admitted-to-a-pediatric-emergency-department
#20
D Vareilles, C Bréhin, C Cortey, A-L Chevrin, T Hamon, M Vignes, Y Chaix, I Claudet
Children's hallucinations pose the dual challenge of diagnosing a possible medical emergency and a possible psychiatric disorder. PURPOSE: The main objective was to analyze the causes of such hallucinations in children presenting to a pediatric emergency department. MATERIAL AND METHODS: We conducted a single-center, observational, retrospective study including all children aged less than 15 years experiencing hallucinations and admitted to our tertiary level pediatric emergency department between 1 January 2007 and 31 December 2015...
February 24, 2017: Archives de Pédiatrie: Organe Officiel de la Sociéte Française de Pédiatrie
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