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Visual hallucinations

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https://www.readbyqxmd.com/read/28641772/susac-syndrome-a-differential-diagnosis-of-white-matter-lesions
#1
Mariano Marrodan, Jorge Correale, Lucas Alessandro, Mariela Amaya, Maria Eugenia Fracaro, Alejandro Alfredo Köhler, Marcela Fiol
INTRODUCTION: Susac Syndrome is an autoimmune endotheliopathy affecting capillaries and precapillary arterioles of the brain, inner ear and retina. The classic symptom triad includes visual disturbances, hypoacusia, and encephalopathy, but is rarely fully manifest at onset. The syndrome typically follows an active fluctuating monophasic course. Typical imaging findings on brain magnetic resonance show central fiber microischemias/microinfarctions of the corpus callosum known as "snow balls", as well as lineal infarcts and upper callosal fiber involvement...
July 2017: Multiple Sclerosis and related Disorders
https://www.readbyqxmd.com/read/28625940/prodromal-stage-of-disease-dementia-with-lewy-bodies-how-to-diagnose-in-practice
#2
Frédéric Blanc, Marc Verny
Disease with Lewy bodies or dementia with Lewy bodies (DLB), particularly at the prodromal stage, is a complex disease to diagnose because of different clinical beginnings and variable paths in terms of clinical expression. Thus DLB can be entcountered in different input modes: mild cognitive impairment, depression, acute behavioral disorders, confusion and delirium, or sleep disorders. In the aim to better diagnose the disease, should be sought obviously to search for the key symptoms: fluctuations, hallucinations, extra-pyramidal syndrome, and REM sleep behavior disorder...
June 1, 2017: Gériatrie et Psychologie Neuropsychiatrie du Vieillissement
https://www.readbyqxmd.com/read/28622335/psychotic-symptoms-in-older-people-without-dementia-from-a-brazilian-community-based-sample-a-seven-years-follow-up
#3
Walter Barbalho Soares, Eriton Barros Dos Santos, Cássio Machado de Campos Bottino, Helio Elkis
BACKGROUND: Studies of the incidence of psychotic symptoms in elderly people at risk of dementia are scarce. This is a seven year follow up study aiming to determine the incidence of psychotic symptoms and their correlation with other clinical aspects, in particular the rate of development of cognitive impairment. METHODS: Cohort study of a community-based sample of elderly subjects. At study entry in 2004, the sample was composed of 1,125 individuals aged 60 years and older...
2017: PloS One
https://www.readbyqxmd.com/read/28615779/multimodal-hallucinations-in-a-visually-impaired-elderly-female-is-it-a-variant-of-charles-bonnet-syndrome
#4
Sukanto Sarkar, Eswaran Subramanium, Kirti Nath Jha
Charles Bonnet Syndrome (CBS) is a common cause of visual hallucinations seen in elderly people with visual impairment. Well-formed visual hallucinations in clear consciousness with preserved insight are commonly reported in literature. We report a case of CBS having multisensory hallucinations. An elderly patient with visual impairment fulfilling the criteria of CBS presents with various modalities of hallucinations viz. visual, auditory and tactile hallucinations improved completely with low dose of antipsychotics...
May 2017: Indian Journal of Psychological Medicine
https://www.readbyqxmd.com/read/28604926/ads-5102-amantadine-extended-release-capsules-for-levodopa-induced-dyskinesia-in-parkinson-disease-ease-lid-study-a-randomized-clinical-trial
#5
Rajesh Pahwa, Caroline M Tanner, Robert A Hauser, Stuart H Isaacson, Paul A Nausieda, Daniel D Truong, Pinky Agarwal, Keith L Hull, Kelly E Lyons, Reed Johnson, Mary Jean Stempien
Importance: Medical treatment of levodopa-induced dyskinesia (LID) in Parkinson disease (PD) is an unmet need. Objective: To evaluate the efficacy and safety of ADS-5102 (amantadine) extended-release 274-mg capsules for treatment of LID in patients with PD. Design, Setting, and Participants: A randomized, double-blind, placebo-controlled clinical trial was conducted between May 7, 2014, and July 22, 2015, at 44 North American sites among patients with PD treated with levodopa who experienced at least 1 hour of troublesome dyskinesia per day with at least mild functional impact...
June 12, 2017: JAMA Neurology
https://www.readbyqxmd.com/read/28603772/compensatory-shifts-in-visual-perception-are-associated-with-hallucinations-in-lewy-body-disorders
#6
Alan Robert Bowman, Vicki Bruce, Christopher J Colbourn, Daniel Collerton
Visual hallucinations are a common, distressing, and disabling symptom of Lewy body and other diseases. Current models suggest that interactions in internal cognitive processes generate hallucinations. However, these neglect external factors. Pareidolic illusions are an experimental analogue of hallucinations. They are easily induced in Lewy body disease, have similar content to spontaneous hallucinations, and respond to cholinesterase inhibitors in the same way. We used a primed pareidolia task with hallucinating participants with Lewy body disorders (n = 16), non-hallucinating participants with Lewy body disorders (n = 19), and healthy controls (n = 20)...
2017: Cognitive Research: Principles and Implications
https://www.readbyqxmd.com/read/28600444/deconstructing-psychosis-and-misperception-symptoms-in-parkinson-s-disease
#7
Yoshiyuki Nishio, Kayoko Yokoi, Makoto Uchiyama, Yasuyuki Mamiya, Hiroyuki Watanabe, Miyeong Gang, Toru Baba, Atsushi Takeda, Kazumi Hirayama, Etsuro Mori
OBJECTIVE: Patients with Lewy body disease develop a variety of psychotic and misperception symptoms, including visual hallucinations and delusions, as well as 'minor hallucinations', that is, a sense of presence, passage hallucinations and visual illusions. Although these symptoms have been suggested to have common underlying mechanisms, the commonalities and differences among them have not been systematically investigated at the neural level. METHODS: Sixty-seven patients with Parkinson's disease underwent neuropsychological and behavioural assessments, volumetric MRI and 18F-fluorodeoxyglucose-positron emission tomography (FDG-PET)...
June 9, 2017: Journal of Neurology, Neurosurgery, and Psychiatry
https://www.readbyqxmd.com/read/28579345/efficacy-and-safety-of-midazolam-and-ketamine-in-paediatric-upper-endoscopy
#8
Ahmet Basturk, Reha Artan, Aygen Yılmaz
BACKGROUND AND STUDY AIM: Upper endoscopy can be successfully carried out in children under deep sedation and anaesthesia. However, the best method of upper endoscopy for children who require gastrointestinal intervention has yet to be defined. The aim of this study is to investigate the efficacy and safety of the sedation induced by intravenous midazolam and ketamine during upper endoscopy in children. PATIENTS AND METHODS: This study included patients ages 3-18years who had undergone upper endoscopy...
June 1, 2017: Arab Journal of Gastroenterology: the Official Publication of the Pan-Arab Association of Gastroenterology
https://www.readbyqxmd.com/read/28578818/clinical-milestones-in-parkinson-s-disease-a-7-year-population-based-incident-cohort-study
#9
Anders Bjornestad, Kenn Freddy Pedersen, Ole-Bjorn Tysnes, Guido Alves
INTRODUCTION: Clinical staging of Parkinson's disease (PD) is important for patient management and prognosis. The non-motor and functional features visual hallucinations, recurrent falls, dementia and nursing home placement are currently not included in clinical staging schemes, but have been suggested as clinical milestones with important prognostic implications in advanced PD. In this study, we sought to evaluate the potential of these four milestone events for clinical staging and prognosis during the early years of the disease...
May 29, 2017: Parkinsonism & related Disorders
https://www.readbyqxmd.com/read/28572112/delirium-in-children-identification-prevention-and-management
#10
Amanda Bettencourt, Jodi E Mullen
Delirium in children is an often underrecognized but serious complication of hospitalization. Delirium in this age group has been described as behaviors such as refractory agitation and restlessness, visual or auditory hallucinations, children being "not themselves," and a lethargic state. Often, children with delirium are at risk for harming themselves by dislodging tubes, falling, or refusing care. Pediatric nurses must recognize and intervene to prevent and treat delirium in hospitalized children because the delirium may be an indicator of worsening clinical status and is associated with high mortality and morbidity in children of all ages and with posttraumatic stress disorder...
June 2017: Critical Care Nurse
https://www.readbyqxmd.com/read/28566609/progressive-b%C3%A3-lint-s-syndrome-in-a-patient-demonstrating-dementia-with-lewy-bodies
#11
Yasuhisa Sakurai, Yoshifumi Nakashima
We herein report a 65-year-old man demonstrating dementia with Lewy bodies who first presented with Bálint's syndrome. Two years later, a mild cognitive impairment was noted. From three years after onset, he developed progressive parkinsonism, visual hallucination, and autonomic dysfunction, in line with the deterioration of the cognitive function. Single photon emission computed tomography with a (99m)Tc-ethylcysteinate dimer performed two years after onset revealed hypoperfusion in the restricted area of the bilateral superior parietal lobule, which extended to the lateral occipital cortices within two years...
2017: Internal Medicine
https://www.readbyqxmd.com/read/28562181/working-memory-predicts-presence-of-auditory-verbal-hallucinations-in-schizophrenia-and-bipolar-disorder-with-psychosis
#12
Lisanne M Jenkins, Anjuli S Bodapati, Rajiv P Sharma, Cherise Rosen
OBJECTIVE: The recent dramatic increase in research investigating auditory verbal hallucinations (AVHs) has broadened the former narrow focus on schizophrenia to incorporate additional populations that experience these symptoms. However, an understanding of potential shared mechanisms remains elusive. Based on theories suggesting a failure of top-down cognitive control, we aimed to compare the relationship between AVHs and cognition in two categorical diagnoses of psychosis, schizophrenia and psychotic bipolar disorder...
May 31, 2017: Journal of Clinical and Experimental Neuropsychology
https://www.readbyqxmd.com/read/28556688/severe-and-rapidly-progressive-lafora-disease-associated-with-nhlrc1-mutation-a-case-report
#13
Sara Casciato, Stefano Gambardella, Addolorata Mascia, Pier Paolo Quarato, Alfredo D'Aniello, Yana Ackurina, Veronica Albano, Francesco Fornai, Simona Scala, Giancarlo Di Gennaro
Lafora disease (LD), also known as progressive myoclonic epilepsy-2 (EPM2), is a rare, fatal autosomal recessive disorder typically starting during adolescence in otherwise neurologically normal individuals. It is clinically characterized by insidious of progressive neurological features including seizures, action myoclonus, visual hallucination, ataxia and dementia. Mutations in the laforin (EPM2A) gene on chromosome 6q24 or in the malin gene (NHLRC1) on chromosome 6p22 are responsible of LD phenotype. Diagnostic workup includes genetic analysis as well as axillary skin biopsy with evidence of typical periodic acid-Schiff (PAS)-positive polyglucosan inclusion bodies (Lafora bodies) in the apocrine glands and/or in the eccrine duct...
June 12, 2017: International Journal of Neuroscience
https://www.readbyqxmd.com/read/28554165/network-modeling-of-resting-state-connectivity-points-towards-the-bottom-up-theories-of-schizophrenia
#14
François Orliac, Pascal Delamillieure, Nicolas Delcroix, Mikael Naveau, Perrine Brazo, Annick Razafimandimby, Sonia Dollfus, Marc Joliot
The dysconnectivity theory of schizophrenia proposes that schizophrenia symptoms arise from abnormalities in neuronal synchrony. Resting-state Functional Connectivity (FC) techniques allow us to highlight synchronization of large-scale networks, the Resting-state Networks (RNs). A large body of work suggests that disruption of RN synchronization could give rise to specific schizophrenia symptoms. The present study aimed to explore within- and between-network FC strength of 34 RNs in 29 patients suffering from schizophrenia, and their relationships with schizophrenia symptoms...
April 12, 2017: Psychiatry Research
https://www.readbyqxmd.com/read/28547577/pramipexole-overdose-associated-with-visual-hallucinations-agitation-and-myoclonus
#15
Adeline Cardon-Dunbar, Tom Robertson, Michael S Roberts, Geoffrey K Isbister
INTRODUCTION: Pramipexole is a dopamine D2 receptor agonist used to treat idiopathic Parkinson's disease and primary restless legs syndrome. There is limited information on pramipexole overdose. CASE REPORT: A 59-year-old male ingested 3 mg pramipexole, 2250 mg venlafaxine, 360 mg mirtazapine, with suicidal intent. He presented alert, had normal vital observations and normal pupillary reflexes. He was mildly agitated, reported visual hallucinations and was given 5 mg diazepam...
May 25, 2017: Journal of Medical Toxicology: Official Journal of the American College of Medical Toxicology
https://www.readbyqxmd.com/read/28498375/neuro-ophthalmologic-manifestations-of-cholangiocarcinoma-a-case-series
#16
G Rico, S V Smith, Y Siddiqui, A Whyte, D Gombos, A G Lee
PurposeTo describe the neuro-ophthalmologic findings of cholangiocarcinoma.MethodsWe report a retrospective chart review of cholangiocarcinoma patients presenting at two tertiary care centers in the Texas Medical Center.ResultsFive patients with neuro-ophthalmologic symptoms related to cholangiocarcinoma were identified. One patient presented with diplopia due to metastasis to the left medial rectus muscle, two patients had metastasis to the occipital lobe resulting in homonymous hemianopsia, one patient had involvement of the clivus resulting in sixth nerve palsy, and one presented with a hypercoagulable state-related stroke causing a homonymous hemianopsia and visual hallucinations...
May 12, 2017: Eye
https://www.readbyqxmd.com/read/28491313/positron-emission-tomography-imaging-in-a-case-of-e200k-mutation-related-spongiform-encephalopathy-with-non-diagnostic-magnetic-resonance-imaging-and-cerebrospinal-fluid-testing
#17
Pravin George, Christopher R Newey, Karin P Mente, Erik P Pioro
OBJECTIVE: Creutzfeldt-Jakob disease is a rapidly progressive spongiform encephalopathy. The E200K mutation is found in a majority of genetically transmitted Creutzfeldt-Jakob disease cases. METHODS: We describe the case and associated neuroimaging of an E200K-129M gene-mutation-related fatal spongiform encephalopathy with resultant clinical insomnia and thalamic changes. RESULTS: A 46-year-old Caucasian male presented with, who was well until 2 months prior to admission, a rapidly progressive dementia followed by a change in personality with auditory and visual hallucinations...
2017: SAGE open medical case reports
https://www.readbyqxmd.com/read/28480228/elevated-voriconazole-level-associated-with-hallucinations-and-suicidal-ideation-a-case-report
#18
Jeffrey W Jansen, Sumon K Sen, Ryan P Moenster
Voriconazole, a broad-spectrum antifungal, has been associated with visual and auditory hallucinations. We report the case of patient being treated with voriconazole for pulmonary aspergillosis who developed visual hallucinations and new suicidal ideation with plan. Voriconazole troughs were supratherapeutic (9.0 mcg/mL) and the patient was positive for the CYP2C19*1/*2 allele.
2017: Open Forum Infectious Diseases
https://www.readbyqxmd.com/read/28475071/robust-face-hallucination-via-locality-constrained-bi-layer-representation
#19
Licheng Liu, C L Philip Chen, Shutao Li, Yuan Yan Tang, Long Chen
Recently, locality-constrained linear coding (LLC) has been drawn great attentions and been widely used in image processing and computer vision tasks. However, the conventional LLC model is always fragile to outliers. In this paper, we present a robust locality-constrained bi-layer representation model to simultaneously hallucinate the face images and suppress noise and outliers with the assistant of a group of training samples. The proposed scheme is not only able to capture the nonlinear manifold structure but also robust to outliers by incorporating a weight vector into the objective function to subtly tune the contribution of each pixel offered in the objective...
May 2, 2017: IEEE Transactions on Cybernetics
https://www.readbyqxmd.com/read/28458550/psychosis-in-behavioral-variant-frontotemporal-dementia
#20
Flora T Gossink, Everard Gb Vijverberg, Welmoed Krudop, Philip Scheltens, Max L Stek, Yolande Al Pijnenburg, Annemiek Dols
BACKGROUND: Dementia is generally characterized by cognitive impairment that can be accompanied by psychotic symptoms; for example, visual hallucinations are a core feature of dementia with Lewy bodies, and delusions are often seen in Alzheimer's disease. However, for behavioral variant of frontotemporal dementia (bvFTD), studies on the broad spectrum of psychotic symptoms are still lacking. The aim of this study was to systematically and prospectively subtype the wide spectrum of psychotic symptoms in probable and definite bvFTD...
2017: Neuropsychiatric Disease and Treatment
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