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Trigeminal neuralgia etiology

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https://www.readbyqxmd.com/read/28181442/history-of-facial-pain-diagnosis
#1
Joanna M Zakrzewska, Troels S Jensen
Premise Facial pain refers to a heterogeneous group of clinically and etiologically different conditions with the common clinical feature of pain in the facial area. Among these conditions, trigeminal neuralgia (TN), persistent idiopathic facial pain, temporomandibular joint pain, and trigeminal autonomic cephalalgias (TAC) are the most well described conditions. Conclusion TN has been known for centuries, and is recognised by its characteristic and almost pathognomonic clinical features. The other facial pain conditions are less well defined, and over the years there has been confusion about their classification...
January 1, 2017: Cephalalgia: An International Journal of Headache
https://www.readbyqxmd.com/read/28158167/the-rare-painful-phenomena-chronic-paroxysmal-hemicrania-tic-syndrome-as-a-clinically-isolated-syndrome-of-the-central-nervous-system
#2
Srdjan Ljubisavljevic, Ana Prazic, Miodrag Lazarevic, Dragan Stojanov, Dejan Savic, Slobadan Vojinovic
The association of paroxysmal hemicrania with trigeminal neuralgia (TN) has been described and called paroxysmal hemicrania-tic syndrome (PH-tic). We report the case of a patient diagnosed as having chronic PH-tic (CPH-tic) syndrome as a clinically isolated syndrome of the central nervous system (CNS) (CIS).A forty year old woman was admitted to our hospital suffering from right facial pain for the last 2 years. The attacks were paroxysmal, neuralgiform, consisting of throb-like sensations, which developed spontaneously or were triggered by different stimuli in right facial (maxilar and mandibular) areas...
February 2017: Pain Physician
https://www.readbyqxmd.com/read/28158153/trigeminal-neuralgia-induced-by-cobra-venom-leads-to-cognitive-deficits-associated-with-downregulation-of-creb-bdnf-pathway
#3
Li Zhang, Xinli Ding, Zhe Wu, Xiaoyan Qian, Jianxiong An, Ming Tian
BACKGROUND: Chronic pain often results in cognitive impairment. Our previous study showed that trigeminal neuralgia induced by cobra venom leads to spatial learning and memory deficits, although the underlying mechanism remains unclear. However, recent evidence indicates that the c-AMP-responsive element binding protein (CREB)/brain derived neurotrophic factor (BDNF) pathway plays a critical role in various etiologies of cognitive deficits. OBJECTIVES: Our aim was to explore the CREB/BDNF pathway to determine the molecular mechanisms involved in the pathogenesis of cognitive impairment caused by cobra venom-induced trigeminal neuralgia...
February 2017: Pain Physician
https://www.readbyqxmd.com/read/28135936/toward-an-etiology-based-management-of-trigeminal-neuralgia
#4
Turo J Nurmikko
No abstract text is available yet for this article.
January 31, 2017: Pain Management
https://www.readbyqxmd.com/read/28118196/the-study-of-calcium-phosphonium-magnesium-and-ferrum-concentration-in-serum-of-patients-with-primary-trigeminal-neuralgia
#5
Hua Zhao, Yinda Tang, Xin Zhang, Shiting Li
OBJECTIVE: To measure the concentration of 4 essential elements (Ca, P, Mg, Fe) in serum of patients with primary trigeminal neuralgia. And evaluate the role of the 4 elements in serum on the pathogenesis of trigeminal neuralgia (TN), and the relevance of etiology. METHODS: From June 2013 to June 2014, a number of 80 patients with primary trigeminal neuralgia were collected. We present a retrospective review of the concentration of 4 essential elements with those of control group of 80 patients without TN...
January 23, 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28077839/atypical-trigeminal-neuralgia-a-rare-neurological-manifestation-of-systemic-lupus-erythematosus
#6
Viki Kumar, Jaspinder Kaur, Pallavi Pothuri, Sahiba Bandagi
BACKGROUND Systemic lupus erythematosus (SLE) is a multisystem autoimmune disorder of unknown etiology which can present at any age with symptoms of mucocutaneous, musculoskeletal, renal, central nervous system, and nonspecific clinical pictures making the disease a "master of mimicry". CASE REPORT A 53-year-old female, who was recently diagnosed with SLE, presented with right-sided sharp and electric shock-like facial pain starting at the side of her right nostril and traveling down the naso-labial fold and then back to the angle of the jaw, mostly in the region of V2-V3 distribution with no radiation beyond trigeminal distribution...
January 12, 2017: American Journal of Case Reports
https://www.readbyqxmd.com/read/28076964/trigeminal-neuralgia-diagnosis-and-treatment
#7
Stine Maarbjerg, Giulia Di Stefano, Lars Bendtsen, Giorgio Cruccu
Introduction Trigeminal neuralgia (TN) is characterized by touch-evoked unilateral brief shock-like paroxysmal pain in one or more divisions of the trigeminal nerve. In addition to the paroxysmal pain, some patients also have continuous pain. TN is divided into classical TN (CTN) and secondary TN (STN). Etiology and pathophysiology Demyelination of primary sensory trigeminal afferents in the root entry zone is the predominant pathophysiological mechanism. Most likely, demyelination paves the way for generation of ectopic impulses and ephaptic crosstalk...
January 1, 2017: Cephalalgia: An International Journal of Headache
https://www.readbyqxmd.com/read/28005781/narrow-foramen-ovale-and-rotundum-a-role-in-the-etiology-of-trigeminal-neuralgia
#8
Pengfei Liu, Wenxiang Zhong, Chenlong Liao, Ming Liu, Wenchuan Zhang
Primary trigeminal neuralgia (TN) may occasionally occur in absence of neurovascular compression. A mechanism other than nerovascular compression may play a role in TN. High-resolution computed tomographies (CTs) of 21 consecutive TN patients without vascular compression during surgery and 30 healthy volunteers were retrospectively performed. Measuring parameters (length, width, and aspect ratio) were obtained in the axial plane for foramen ovale, and in the reconstructed coronal plane for foramen rotundum on both sides in each subject...
November 2016: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/27989975/is-there-an-mri-discernible-etiology-for-trigeminal-neuralgia-a-structured-review
#9
REVIEW
Judy Alper, Raj K Shrivastava, Priti Balchandani
BACKGROUND: Trigeminal neuralgia (TN) is a chronic brain condition involving the trigeminal nerve and characterized by severe and recurrent facial pain. While the etiology of TN has been researched extensively, there is a lack of convergence on the exact physiological processes leading to pain symptoms. This review seeks to better elucidate the underlying pathophysiology of TN by analyzing the outcomes of studies that utilize magnetic resonance (MR) structural imaging and diffusion-weighted imaging (DWI) to examine nerve damage in patients with TN...
October 27, 2016: World Neurosurgery
https://www.readbyqxmd.com/read/27942467/can-pontine-trigeminal-t2-hyperintensity-suggest-herpetic-etiology-of-trigeminal-neuralgia
#10
Alessandra D'Amico, Carmela Russo, Lorenzo Ugga, Federica Mazio, Elisa Capone, Felice D'Arco, Kshitij Mankad, Ferdinando Caranci, Enrico Marano, Arturo Brunetti
BACKGROUND: Trigeminal neuralgia (TN) is usually classified into two different categories: idiopathic and secondary. We have investigated the frequency of brainstem pontine lesions in patients with idiopathic TN without multiple sclerosis (MS) or stroke, and their association with herpes zoster (HZ) infection. METHODS: Brain magnetic resonance imaging (MRI) studies of 28 patients with TN were retrospectively reviewed. RESULTS: We found seven patients with clinical suspicion of HZ infection and pontine T2 hyperintense lesions, associated with nerve atrophy in one case...
October 2016: Quantitative Imaging in Medicine and Surgery
https://www.readbyqxmd.com/read/27807409/structural-magnetic-resonance-imaging-can-identify-trigeminal-system-abnormalities-in-classical-trigeminal-neuralgia
#11
REVIEW
Danielle D DeSouza, Mojgan Hodaie, Karen D Davis
Classical trigeminal neuralgia (TN) is a chronic pain disorder that has been described as one of the most severe pains one can suffer. The most prevalent theory of TN etiology is that the trigeminal nerve is compressed at the root entry zone (REZ) by blood vessels. However, there is significant evidence showing a lack of neurovascular compression (NVC) for many cases of classical TN. Furthermore, a considerable number of patients who are asymptomatic have MR evidence of NVC. Since there is no validated animal model that reproduces the clinical features of TN, our understanding of TN pathology mainly comes from biopsy studies that have limitations...
2016: Frontiers in Neuroanatomy
https://www.readbyqxmd.com/read/27695232/nummular-headache-clinico-epidemiological-features-in-south-indian-population
#12
K Rammohan, Shyma M Mundayadan, Robert Mathew
CONTEXT: Nummular headache (NH) is a primary disorder characterized by head pain exclusively felt in a small-rounded area typically 2-6 cm in diameter. AIMS: The aim of this review is to study the clinical and epidemiological features of NH in a patient population of South India and to compare this with that of described in the international literature. SETTINGS AND DESIGN: A prospective, observational study conducted in a tertiary care center...
October 2016: Journal of Neurosciences in Rural Practice
https://www.readbyqxmd.com/read/27648861/clinical-features-and-long-term-surgical-outcomes-in-39-patients-withtumor-related-trigeminal-neuralgia-compared-with-360-patients-with-idiopathic-trigeminal-neuralgia
#13
Yongxu Wei, Weiguo Zhao, Chunhua Pu, Ning Li, Yu Cai, Hanbing Shang, Wenlei Yang
OBJECTIVE: The purpose of this study was to compare clinical features, long-term surgical outcomes between patients with idiopathic and tumor-related trigeminal neuralgia (TN), and to identify factors associated with the maintenance of permanent pain-free state. METHODS: Between January 2003 and December 2013, 360 patients with idiopathic TN and 39 patients with tumor-related TN who had undergone microsurgery were retrospectively studied. Kaplan-Meier survival curves were generated and compared by Log-rank test, and the possible prognostic factors were analyzed by the Cox proportional-hazards regression...
February 2017: British Journal of Neurosurgery
https://www.readbyqxmd.com/read/27564067/narrow-foramen-ovale-and-rotundum-a-role-in-the-etiology-of-trigeminal-neuralgia
#14
Pengfei Liu, Wenxiang Zhong, Chenlong Liao, Ming Liu, Wenchuan Zhang
Primary trigeminal neuralgia (TN) may occasionally occur in absence of neurovascular compression. A mechanism other than nerovascular compression may play a role in TN. High-resolution computed tomographies (CTs) of 21 consecutive TN patients without vascular compression during surgery and 30 healthy volunteers were retrospectively performed. Measuring parameters (length, width, and aspect ratio) were obtained in the axial plane for foramen ovale, and in the reconstructed coronal plane for foramen rotundum on both sides in each subject...
August 25, 2016: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/27546336/neurovascular-compression-at-the-root-entry-zone-correlates-with-trigeminal-neuralgia-and-early-microvascular-decompression-outcome
#15
Akshitkumar M Mistry, Kurt J Niesner, Wendell B Lake, Jonathan A Forbes, Chevis N Shannon, Rebecca A Kasl, Peter E Konrad, Joseph S Neimat
BACKGROUND: Trigeminal neurovascular contact (NVC) is hypothesized to be the etiology of classical trigeminal neuralgia (TGN). We aimed to seek a correlation between types of NVCs and the presence of TGN as well as early surgical outcome in patients with TGN treated with trigeminal microvascular decompression (MVD). METHODS: We blindly analyzed preoperative high-resolution magnetic resonance images with respect to the degree (none, "touch," or compression) and location of bilateral NVC in 57 retrospectively identified Burchiel Type 1 TGN patients treated by MVD...
November 2016: World Neurosurgery
https://www.readbyqxmd.com/read/27399474/195%C3%A2-how-well-do-neuroradiologists-predict-the-side-of-trigeminal-neuralgia
#16
Amparo M Wolf, Ingrid Aguiar-Littig, Girish Fatterpekar, Douglas Kondziolka
INTRODUCTION: With improving MRI techniques, physicians can better visualize neurovascular compression (NVC) of the trigeminal nerve, as well as proximal and distal nerve atrophy, nerve distortion, and demyelinating plaques. This study aimed to determine the interrater reliability of these different anatomical variables, as well as the accuracy in predicting the side of trigeminal neuralgia (TN) for 2 neuroradiologists. METHODS: High-resolution MRI sequences including T1-Gadolinium and constructive interference in steady state (CISS) sequences were reviewed in 43 patients, with symptomatic TN in 44 nerves, who subsequently underwent Gamma Knife radiosurgery...
August 2016: Neurosurgery
https://www.readbyqxmd.com/read/27399473/194%C3%A2-efficacy-of-primary-microvascular-decompression-vs-salvage-microvascular-decompression-for-trigeminal-neuralgia
#17
C Rory Goodwin, Debebe Theodros, Nancy A Abu-Bonsrah, Matt Bender, Xin Zhou, Rafael De la Garza-Ramos, Dimitrios Mathios, Tomas Garzon-Muvdi, Ari M Blitz, Alessandro Olivi, Benjamin S Carson, Chetan Bettegowda
INTRODUCTION: Trigeminal neuralgia (TN) is a pain disorder characterized by paroxysmal lancinating pain along the distribution of the trigeminal nerve. Mounting clinical evidence supports the neurovascular compression (NVC) theory, suggesting vascular compression results in the manifestation of debilitating pain. Microvascular decompression (MVD) is the only known surgical intervention that directly addresses this proposed etiology. METHODS: A retrospective review of patient records at the Johns Hopkins Hospital from 1998 to 2015 revealed 942 patients with TN and 500 patients who underwent MVD...
August 2016: Neurosurgery
https://www.readbyqxmd.com/read/27324998/the-role-of-imaging-for-trigeminal-neuralgia-a-segmental-approach-to-high-resolution-mri
#18
REVIEW
Daniel P Seeburg, Benjamin Northcutt, Nafi Aygun, Ari M Blitz
High-resolution MRI affords exquisite anatomic detail and allows radiologists to scrutinize the entire course of the trigeminal nerve (cranial nerve [CN] V). This article focuses first on the normal MRI appearance of the course of CN V and how best to image each segment. Special attention is then devoted to the role of MRI in presurgical evaluation of patients with neurovascular conflict and in identifying secondary causes of trigeminal neuralgia, including multiple sclerosis. Fundamental concepts in postsurgical imaging after neurovascular decompression are also addressed...
July 2016: Neurosurgery Clinics of North America
https://www.readbyqxmd.com/read/27298505/black-hairy-tongue-with-a-fixed-dose-combination-of-olanzapine-and-fluoxetine
#19
Ratinder Jhaj, Pushp Raj Gour, Dinesh Prasad Asati
Black hairy tongue (BHT) is a benign disease characterized by elongated filiform lingual papillae, with a carpet-like appearance of the dorsum of the tongue. It is has been reported to occur with a prevalence ranging from 0.6% to 11.3%. Although its etiology is not fully understood, BHT may be triggered by smoking, excessive coffee or black tea drinking, poor oral hygiene, trigeminal neuralgia, general debilitation, dry mouth as well as certain drugs. We present here a case of a patient with psychosis, depression, and benign prostatic hyperplasia, who developed BHT following treatment with a fixed dose combination (FDC) of olanzapine and fluoxetine and recovered within 3 months after withdrawal of treatment with FDC...
May 2016: Indian Journal of Pharmacology
https://www.readbyqxmd.com/read/27158666/tinnitus-oscillopsia-and-hyperventilation-induced-nystagmus-vestibular-paroxysmia
#20
Bryan K Ward, Daniel R Gold
Vestibular paroxysmia is the name given to vascular compression of the vestibulocochlear nerve. Substantial evidence has been discovered in support of vascular compression of the trigeminal nerve as the etiology for trigeminal neuralgia, and effective therapies have been targeted to address this pathophysiology. Perhaps due to the common and often vaguely-described symptoms of dizziness and tinnitus, vascular compression of the vestibulocochlear nerve as a cause of symptoms has remained controversial. Recent clinical studies, however, have better defined diagnostic criteria for vestibular paroxysmia...
2016: Open Journal of Clinical & Medical Case Reports
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