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Psychogenic movement disorders

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https://www.readbyqxmd.com/read/28944096/sensory-motor-and-intrinsic-mechanisms-of-thalamic-activity-related-to-organic-and-psychogenic-dystonia
#1
K Kobayashi, J H Chien, J H Kim, F A Lenz
The thalamus is a critical module in the circuit which has been associated with movement disorders including dystonia. This circuit extends from cortex to striatum to pallidum to the thalamic nucleus Ventral Lateral anterior (VLa) to cortex and can be studied by activity recorded during thalamic stereotactic surgery for the treatment of dystonia. Neuronal recordings in the VLa nucleus show low frequency modulation of firing that is correlated with and leads the low frequency modulation of EMG activity; this EMG activity is characteristic of dystonia...
June 2017: Journal of Alzheimer's Disease and Parkinsonism
https://www.readbyqxmd.com/read/28922189/acr-acnm-practice-parameter-for-the-performance-of-dopamine-transporter-dat-single-photon-emission-computed-tomography-spect-imaging-for-movement-disorders
#2
Rathan M Subramaniam, Kirk A Frey, Christopher H Hunt, Gustavo A Mercier, Lilja B Solnes, Patrick M Colletti, Yang Lu, Bital Savir-Baruch, Hadyn T Williams
This American College of Radiology and American College of Nuclear Medicine joint clinical practice parameter is for performance of dopamine transporter single photon emission computed tomography (SPECT) imaging, for patients with movement disorders. Parkinsonian syndrome (PS) consists of a group of neurodegenerative diseases including Parkinson disease (PD), progressive supranuclear palsy (PSP), multiple system atrophy (MSA), corticobasal degeneration (CBD), and dementia with Lewy bodies (DLB). Accurate diagnosis of PS is critical for clinical management...
September 15, 2017: Clinical Nuclear Medicine
https://www.readbyqxmd.com/read/28842725/-diagnosis-of-non-epileptic-paroxysmal-disorders-and-epileptic-seizures
#3
REVIEW
S Noachtar, B Güldiken
Non-epileptic paroxysmal disorders may clinically manifest in a similar way to epileptic seizures and have to be considered in the differential diagnosis of epilepsy. Syncope, non-epileptic psychogenic seizures, paroxysmal movement disorders, migraine, transient ischemic attacks and parasomnia constitute the major differential diagnoses. A meticulous history and a third party description are useful for the differential diagnosis. Neurological, psychiatric and cardiological examinations are required for the correct differential diagnosis...
August 25, 2017: Der Nervenarzt
https://www.readbyqxmd.com/read/28716772/chewing-induced-facial-dystonia-a-rare-presentation-of-task-specific-dystonia
#4
Chandramohan Sharma, Banshi Lal Kumawat, Ankur Garg, Kaushik Kumar Rana
This case is an addition to scarce literature available for a rare condition, chewing-induced task-specific dystonia. The patient was a 63-year-old woman who presented with a 4-year history of progressive difficulty in eating food only during chewing associated with abnormal facial grimaces without any difficulty in drinking, swallowing, speaking or singing. Examination revealed dystonia of facial muscles every time she chewed but absent during drinking and speaking. As movements were consistent and reproducible with the specific task, other differential diagnosis like motor tics, psychogenic disorder, tardive dystonia and parkinsonism syndrome were excluded leading to a diagnosis of task-specific facial dystonia triggered by chewing...
July 17, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28709746/the-most-promising-advances-in-our-understanding-and-treatment-of-functional-psychogenic-movement-disorders
#5
Mark Hallett
The name functional rather than psychogenic is getting to be more widely used for terminology of this condition. It is better accepted by patients and keeps an open mind in searching for greater understanding of the pathophysiology. Advances in the pathophysiology show an overactive limbic system with connections to the motor system. Moreover, there is a disruption of the self-agency network, possibly due to a failure of feedforward signaling. There has recently been more success in treating patients. The strongest evidence is for intensive physical therapy coupled with at least some psychological support...
July 8, 2017: Parkinsonism & related Disorders
https://www.readbyqxmd.com/read/28653211/functional-psychogenic-stereotypies
#6
José Fidel Baizabal-Carvallo, Joseph Jankovic
Functional (psychogenic) movement disorders (FMDs) may present with a broad spectrum of phenomenology including stereotypic movements. We aimed to characterize the phenomenology of functional stereotypies and compare these features with those observed in 65 patients with tardive dyskinesia (TD). From a cohort of 184 patients with FMDs, we identified 19 (10.3%) with functional stereotypies (FS). There were 15 women and 4 men, with a mean age at onset of 38.6 ± 17.4 years. Among the patients with FS, there were 9 (47%) with orolingual dyskinesia/stereotypy, 9 (47%) with limb stereotypies, 6 (32%) with trunk stereotypies, and 2 (11%) with respiratory dyskinesia as part of orofacial-laryngeal-trunk stereotypy...
July 2017: Journal of Neurology
https://www.readbyqxmd.com/read/28638211/psychogenic-blepharospasm-a-diagnostic-dilemma
#7
Soumitra DAS, Roopchand Pandrantil Sreedharan, Prasanth Sudhakaran Remadevi, Cheruvallil Velayudhan Saji
Blepharospasm is an uncontrolled spasmodic contraction of the orbicularis muscles of the eye resulting in an abnormal tic or twitch of eyes. It usually lasts for seconds to minutes but in severe cases eyes may be closed for hours. It may be essentially benign or secondary due to a lesion in basal ganglia, pyramidal tract, and trauma, local pathology in the eyes or drug induced. Here we are presenting a case of psychogenic blepharospasm. A 65 year old woman presented with a history of episodic inability of opening her eyes for the past 6 months...
December 25, 2016: Shanghai Archives of Psychiatry
https://www.readbyqxmd.com/read/28606495/personality-traits-in-psychogenic-nonepileptic-seizures-pnes-and-psychogenic-movement-disorder-pmd-neuroticism-and-perfectionism
#8
Vindhya Ekanayake, Sarah Kranick, Kathrin LaFaver, Arshi Naz, Anne Frank Webb, W Curt LaFrance, Mark Hallett, Valerie Voon
OBJECTIVE: Psychogenic movement disorder (PMD) and psychogenic nonepileptic seizures (PNES) are two subtypes of conversion disorder (CD). In this case-control study, we asked whether these subtypes varied as a function of personality and history of childhood abuse. METHODS: Fifty-nine patients with PMD from the Human Motor Control Section Clinic at the National Institutes of Health, 43 patients with PNES from the Rhode Island Hospital Neuropsychiatry and Behavioral Neurology Division, and 26 healthy volunteers (HC) received a battery of neurological, psychiatric and psychological assessments, including the NEO Personality Inventory Revised (NEO PI-R), the Childhood Trauma Questionnaire (CTQ), and the Traumatic Life Events Questionnaire (TLEQ)...
June 2017: Journal of Psychosomatic Research
https://www.readbyqxmd.com/read/28553377/sporadic-hyperekplexia-plus-syndrome
#9
Sadanandavalli Retnaswami Chandra, Chetan Vekhande, Lakshminarayanapuram Gopal Viswanathan, Pooja Mailankody, Karru Venkata Ravi Teja
A disorder of infants and children with pathological startle response, features of other system involvement, falls, and stiffness with retained consciousness. It should be differentiated from conditions such as myoclonic epilepsy, psychogenic movement disorder, Isaac syndrome, Schwartz-Jampel syndrome, Gilles de la Tourette, and culture-specific startle syndromes such as jumping Frenchman of Maine. A 5-year-old child symptomatic with repeated falls spontaneously as well as by sound and activities since neonatal period...
January 2017: Journal of Pediatric Neurosciences
https://www.readbyqxmd.com/read/28427022/stereotypy-of-psychogenic-nonepileptic-seizures
#10
Moshe Herskovitz
Psychogenic nonepileptic seizures (PNES) are defined as paroxysmal episodes in which epileptic semiology features are manifested, without the characteristic concomitant electrical discharges seen in epileptic seizures. Although many studies have dealt with semiologic classification of PNES, most of the studies did not raise the question of consistency of PNES in the same patient. The aim of this study was to measure the degree of consistency of PNES among individual patients. We retrospectively reviewed medical records and video- EEG records of all adult patients who underwent monitoring in our center from August 1st 2013 to May 31st 2015...
May 2017: Epilepsy & Behavior: E&B
https://www.readbyqxmd.com/read/28289798/-helpful-instrumental-examinations-in-idiopathic-parkinson-s-disease
#11
U Walter, H Zach, I Liepelt-Scarfone, W Maetzler
BACKGROUND: The clinical diagnosis of idiopathic Parkinson's disease (iPD) can be challenging. In these cases, additional diagnostic methods are available that can help to improve diagnostic accuracy. OBJECTIVES, MATERIAL AND METHODS: This article provides an overview of currently available and promising novel ancillary methods for the early and differential diagnosis of iPD. RESULTS: Imaging tools, such as 1.5 Tesla magnetic resonance imaging (MRI) and computed tomography (CT) are mainly used for the differentiation between iPD and symptomatic parkinsonian syndromes (PS)...
April 2017: Der Nervenarzt
https://www.readbyqxmd.com/read/28168537/hyperkinetic-movement-disorder-emergencies
#12
REVIEW
Giovanni Cossu, Carlo Colosimo
A movement disorder emergency has been defined by Fahn and Frucht as "any neurological disorder evolving acutely or subacutely, in which the clinical presentation is dominated by a primary movement disorder, and in which failure to accurately diagnose and manage the patient may result in significant morbidity or even mortality." In this review, we discuss the most common situations in which hyperkinetic movement disorders, including chorea, ballism, dystonia, myoclonus, tics, as well as psychogenic disorders, can present as emergencies...
January 2017: Current Neurology and Neuroscience Reports
https://www.readbyqxmd.com/read/28124436/normal-sensorimotor-plasticity-in-complex-regional-pain-syndrome-with-fixed-posture-of-the-hand
#13
Francesca Morgante, Antonino Naro, Carmen Terranova, Margherita Russo, Vincenzo Rizzo, Giovanni Risitano, Paolo Girlanda, Angelo Quartarone
BACKGROUND: Movement disorders associated with complex regional pain syndrome type I have been a subject of controversy over the last 10 years regarding their nature and pathophysiology, with an intense debate about the functional (psychogenic) nature of this disorder. The aim of this study was to test sensorimotor plasticity and cortical excitability in patients with complex regional pain syndrome type I who developed a fixed posture of the hand. METHODS: Ten patients with complex regional pain syndrome type I in the right upper limb and a fixed posture of the hand (disease duration less than 24 months) and 10 age-matched healthy subjects were enrolled...
January 2017: Movement Disorders: Official Journal of the Movement Disorder Society
https://www.readbyqxmd.com/read/28122429/suspected-perinatal-depression-revealed-to-be-hereditary-diffuse-leukoencephalopathy-with-spheroids
#14
Josefine Blume, Robert Weissert
Early motor symptoms of neurodegenerative diseases often appear in combination with psychiatric symptoms, such as depression or personality changes, and are in danger of being misdiagnosed as psychogenic in young patients. We present the case of a 32-year-old woman who presented with rapid-onset depression, followed by a hypokinetic movement disorder and cognitive decline during pregnancy. Genetic testing revealed a mutation in the colony-stimulating factor 1 receptor gene, which led to the diagnosis of hereditary diffuse leukoencephalopathy with spheroids...
January 2017: Journal of Movement Disorders
https://www.readbyqxmd.com/read/28122424/psychodynamic-psychotherapy-for-functional-psychogenic-movement-disorders
#15
Vibhash D Sharma, Randi Jones, Stewart A Factor
OBJECTIVE: As the literature for the treatment of functional (psychogenic) movement disorders (FMD) is sparse, we assessed clinical outcomes in patients with FMD who underwent treatment with psychodynamic psychotherapy (PDP). METHODS: A retrospective analysis of the data of patients with FMD who were referred for PDP from 2008-2014 at Emory University Medical Center was performed. RESULTS: Thirty patients were included, mean age at presentation was 50 years (SD 13...
January 2017: Journal of Movement Disorders
https://www.readbyqxmd.com/read/28007363/an-emergency-medicine-focused-review-of-seizure-mimics
#16
James Webb, Brit Long, Alex Koyfman
BACKGROUND: Seizures result in a change in motor, sensory, and behavioral symptoms caused by abnormal neurologic electrical activity. The symptoms share similar presentations of several other conditions, leading to difficulties in diagnosis and frequent improper management. OBJECTIVE: This review evaluates adult patients with suspected seizure, signs and symptoms of seizure, mimics of seizure, and an approach to management of seizure mimics. DISCUSSION: A seizure is caused by abnormal neurologic electrical activity resulting in altered motor, sensory, and behavioral symptoms...
May 2017: Journal of Emergency Medicine
https://www.readbyqxmd.com/read/27994349/approach-to-a-tremor-patient
#17
Soumya Sharma, Sanjay Pandey
Tremors are commonly encountered in clinical practice and are the most common movement disorders seen. It is defined as a rhythmic, involuntary oscillatory movement of a body part around one or more joints. In the majority of the population, tremor tends to be mild. They have varying etiology; hence, classifying them appropriately helps in identifying the underlying cause. Clinically, tremor is classified as occurring at rest or action. They can also be classified based on their frequency, amplitude, and body part involved...
October 2016: Annals of Indian Academy of Neurology
https://www.readbyqxmd.com/read/27990313/deep-brain-stimulation-of-a-patient-with-psychogenic-movement-disorder
#18
Jean-Philippe Langevin, Jesse M Skoch, Scott J Sherman
BACKGROUND: The long-term safety of deep brain stimulation (DBS) is an important issue because new applications are being investigated for a variety of disorders. Studying instances where DBS was inadvertently implanted in patients without a movement disorder may provide information about the safety of the therapy. We report the case of a patient with a psychogenic movement disorder treated with deep brain stimulation (DBS). CASE DESCRIPTION: The patient presented at our clinic after 5 years of chronic DBS of the subthalamic nucleus (STN) for presumed Parkinson's disease...
2016: Surgical Neurology International
https://www.readbyqxmd.com/read/27942912/distinguishing-features-of-psychogenic-functional-versus-organic-hemifacial-spasm
#19
COMPARATIVE STUDY
José Fidel Baizabal-Carvallo, Joseph Jankovic
Hemifacial spasm (HFS) is one of the most common presentations in patients with cranial psychogenic (functional) movement disorders (PMD). Medical records and videos of patients with PMD and HFS were reviewed to identify those with psychogenic HFS and to compare the phenomenology of psychogenic HFS with organic HFS. We identified 18 (9.8%) patients with psychogenic HFS from a cohort of 184 patients with PMDs. There were 14 (78%) women and 4 men, with a mean age at onset of 33 ± 13.5 years. These were compared with 37 consecutive patients with organic (primary) HFS...
February 2017: Journal of Neurology
https://www.readbyqxmd.com/read/27913700/clinical-decision-making-in-functional-and-hyperkinetic-movement-disorders
#20
Sandra M A van der Salm, Anne-Fleur van Rootselaar, Daniëlle C Cath, Rob J de Haan, Johannes H T M Koelman, Marina A J Tijssen
OBJECTIVE: Functional or psychogenic movement disorders (FMD) present a diagnostic challenge. To diagnose FMD, clinicians must have experience with signs typical of FMD and distinguishing features from other hyperkinetic disorders. The aim of this study was to clarify the decision-making process of expert clinicians while diagnosing FMD, myoclonus, and tics. METHODS: Thirty-nine movement disorders experts rated 60 patients using a standardized web-based survey resembling clinical practice...
January 10, 2017: Neurology
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