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Trigeminal pain

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https://www.readbyqxmd.com/read/28207185/age-related-changes-in-laser-evoked-potentials-following-trigeminal-and-hand-stimulation-in-healthy-subjects
#1
M de Tommaso, K Ricci, A Montemurno, E Vecchio
OBJECTIVE: This study aimed to evaluate age-related changes in laser-evoked potential (LEP) features, including habituation, via trigeminal and hand stimulation in a large group of healthy volunteers. METHODS: We recorded the LEPs by right-hand stimulation in 237 healthy subjects and by stimulation of the right supraorbital zone in 170 cases. The subjects ranged in age from 7 to 72 years and were divided into six groups by age. RESULTS: At the trigeminal level, the N2 and P2 latencies were significantly shorter and the N2-P2 amplitude was significantly larger in the 7-17 age group than in the other groups...
February 16, 2017: European Journal of Pain: EJP
https://www.readbyqxmd.com/read/28194098/spatiotemporal-profiles-of-proprioception-processed-by-the-masseter-muscle-spindles-in-rat-cerebral-cortex-an-optical-imaging-study
#2
Satoshi Fujita, Mari Kaneko, Hiroko Nakamura, Masayuki Kobayashi
Muscle spindles in the jaw-closing muscles, which are innervated by trigeminal mesencephalic neurons (MesV neurons), control the strength of occlusion and the position of the mandible. The mechanisms underlying cortical processing of proprioceptive information are critical to understanding how sensory information from the masticatory muscles regulates orofacial motor function. However, these mechanisms are mostly unknown. The present study aimed to identify the regions that process proprioception of the jaw-closing muscles using in vivo optical imaging with a voltage-sensitive dye in rats under urethane anesthesia...
2017: Frontiers in Neural Circuits
https://www.readbyqxmd.com/read/28192274/activity-and-connectivity-of-the-cerebellum-in-trigeminal-nociception
#3
Jan Mehnert, Laura Schulte, Dagmar Timmann, Arne May
The role of the cerebellum in pathologies of the trigeminal nervous system is still unknown although recently gathered evidence point to a modulatory rather than a passive role. Here we provide evidence for the activation of specific cerebellar areas during nociceptive trigeminal input in the left nostril in a large number of volunteers (54 subjects) and an additional independent group (18 subjects) as measured by functional magnetic resonance imaging (fMRI). Peak voxel activity ipsilateral to the stimulated side can be seen in cerebellar lobules VI, VIIIa and Crus I, and vermal lobule VIIIa, although some activations are also seen in the contralateral side...
February 10, 2017: NeuroImage
https://www.readbyqxmd.com/read/28191336/rare-cervical-intramedullary-cavernous-angioma-with-trigeminal-neuralgia-and-cervical-itch-case-report-and-review-of-the-literature
#4
Gong Shuhui, Liu Jiagang, Huang Siqing, Chen Haifeng, Tang Qingrong, Zhao Bohao
INTRODUCTION: Intramedullary cavernous angioma (ICA) is a rare lesion of the spinal cord, representing only 3% - 5% of central nervous system lesions. The coexistence of trigeminal neuralgia and refractory itch is very rarely encountered in clinical practice. To our knowledge, a report of an ICA with trigeminal neuralgia and local neuropathic itch has never been published to date. Thus, we present a very interesting case of a C2 ICA. CASE PRESENTATION: A 61-year-old female presented with right facial pain for three years, which was exacerbated by accompanying cervical pain and itch for one month...
November 2016: Iranian Red Crescent Medical Journal
https://www.readbyqxmd.com/read/28188632/tic-triggering-and-tearing-from-ctn-to-sunha
#5
R Benoliel, Y Sharav, Y Haviv, G Almoznino
PREMISE: Classical trigeminal neuralgia (CTN) and the short-lasting unilateral neuralgiform headache attacks (SUNHA) are clinically similar. PROBLEM: The SUNHAs include short-lasting unilateral neuralgiform headache attacks with conjunctival injection and tearing (SUNCT) and short-lasting unilateral neuralgiform headache attacks with cranial autonomic symptoms (SUNA). Shared clinical signs with CTN include severe, unilateral trigeminal pain that is often triggered by innocuous stimuli and accompanied by a dull persistent background pain...
February 11, 2017: Headache
https://www.readbyqxmd.com/read/28186468/nocifensive-behaviors-in-mice-with-radiation-induced-oral-mucositis
#6
Michael W Nolan, C Tyler Long, Karen L Marcus, Shayan Sarmadi, Donald M Roback, Tomoki Fukuyama, Wolfgang Baeumer, B Duncan X Lascelles
Oral mucositis can result in significant dysphagia, and is the most common dose-limiting acute toxicity in head and neck cancer patients receiving chemoradiotherapy. There is a critical need to determine the cellular and molecular mechanisms that underlie radiotherapy-associated discomfort in patients with mucositis. The objective was to induce oral mucositis in mice, using a clinical linear accelerator, and to quantify resultant discomfort, and characterize peripheral sensitization. A clinical linear accelerator was used to deliver ionizing radiation to the oral cavity of mice...
February 10, 2017: Radiation Research
https://www.readbyqxmd.com/read/28184169/differential-drug-effects-on-spontaneous-and-evoked-pain-behavior-in-a-model-of-trigeminal-neuropathic-pain
#7
K Deseure, G H Hans
PURPOSE: Baclofen and morphine have shown efficacy against mechanical allodynia after infraorbital nerve chronic constriction injury (IoN-CCI). No drug effects have yet been reported on spontaneous trigeminal neuropathic pain. It has been proposed that the directed face grooming behavior that also develops following IoN-CCI offers a measure of spontaneous trigeminal neuropathic pain. SUBJECTS AND METHODS: We examined the effects of a continuous 1-week infusion of 30 mg/day carbamazepine (the first-line drug treatment for trigeminal neuralgia), 1...
2017: Journal of Pain Research
https://www.readbyqxmd.com/read/28181442/history-of-facial-pain-diagnosis
#8
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/28179394/pathophysiology-of-migraine-a-disorder-of-sensory-processing
#9
REVIEW
Peter J Goadsby, Philip R Holland, Margarida Martins-Oliveira, Jan Hoffmann, Christoph Schankin, Simon Akerman
Plaguing humans for more than two millennia, manifest on every continent studied, and with more than one billion patients having an attack in any year, migraine stands as the sixth most common cause of disability on the planet. The pathophysiology of migraine has emerged from a historical consideration of the "humors" through mid-20th century distraction of the now defunct Vascular Theory to a clear place as a neurological disorder. It could be said there are three questions: why, how, and when? Why: migraine is largely accepted to be an inherited tendency for the brain to lose control of its inputs...
April 2017: Physiological Reviews
https://www.readbyqxmd.com/read/28176234/frequent-mild-head-injury-promotes-trigeminal-sensitivity-concomitant-with-microglial-proliferation-astrocytosis-and-increased-neuropeptide-levels-in-the-trigeminal-pain-system
#10
Ashley L Tyburski, Lan Cheng, Soroush Assari, Kurosh Darvish, Melanie B Elliott
BACKGROUND: Frequent mild head injuries or concussion along with the presence of headache may contribute to the persistence of concussion symptoms. METHODS: In this study, the acute effects of recovery between mild head injuries and the frequency of injuries on a headache behavior, trigeminal allodynia, was assessed using von Frey testing up to one week after injury, while histopathological changes in the trigeminal pain pathway were evaluated using western blot, ELISA and immunohistochemistry...
December 2017: Journal of Headache and Pain
https://www.readbyqxmd.com/read/28168240/cracked-tooth-syndrome-mimicking-trigeminal-autonomic-cephalalgia-a-report-of-four-cases
#11
Noboru Noma, Kohei Shimizu, Kosuke Watanabe, Andrew Young, Yoshiki Imamura, Junad Khan
BACKGROUND: This report describes four cases of cracked tooth syndrome secondary to traumatic occlusion that mimicked trigeminal autonomic cephalalgias. All patients were referred by general practitioners to the Orofacial Pain Clinic at Nihon University Dental School for assessment of atypical facial pain. CLINICAL PRESENTATION: Case 1: A 51-year-old woman presented with severe pain in the maxillary and mandibular left molars. Case 2: A 47-year-old woman presented with sharp, shooting pain in the maxillary left molars, which radiated to the temple and periorbital region...
February 6, 2017: Quintessence International
https://www.readbyqxmd.com/read/28165287/cgrp-receptor-antagonist-activity-of-olcegepant-depends-on-the-signalling-pathway-measured
#12
Christopher S Walker, Ann C Raddant, Michael J Woolley, Andrew F Russo, Debbie L Hay
Background Calcitonin gene-related peptide (CGRP) is a neuropeptide that acts in the trigeminovascular system and is believed to play an important role in migraine. CGRP activates two receptors that are both present in the trigeminovascular system; the CGRP receptor and the amylin 1 (AMY1) receptor. CGRP receptor antagonists, including olcegepant (BIBN4096BS) and telcagepant (MK-0974), can treat migraine. This study aimed to determine the effectiveness of these antagonists at blocking CGRP receptor signalling in trigeminal ganglia (TG) neurons and transfected CGRP and AMY1 receptors in Cos7 cells, to better understand their mechanism of action...
January 1, 2017: Cephalalgia: An International Journal of Headache
https://www.readbyqxmd.com/read/28162634/-390-dexamethasone-versus-triamcinolone-side-effects-for-ultrasound-guided-trigeminal-nerve-block-for-the-treatment-of-refractory-typical-or-atypical-facial-pain
#13
A Nader, M Kendall
No abstract text is available yet for this article.
April 2016: Journal of Pain: Official Journal of the American Pain Society
https://www.readbyqxmd.com/read/28159327/non-invasive-transcutaneous-supraorbital-neurostimulation-tsns-using-cefaly-%C3%A2-device-in-prevention-of-primary-headaches
#14
Anna Przeklasa-Muszyńska, Kinga Skrzypiec, Magdalena Kocot-Kępska, Jan Dobrogowski, Maciej Wiatr, Joanna Mika
Headaches are one of the most common pain syndromes experienced by adult patients. International Classification of Headache Disorders identifies about 300 different entities. Primary headaches (migraine, tension-type headache, trigeminal autonomic cephalalgias, other primary headaches) has the common occurrence. Although effective treatment of these disorders is possible, it is inefficient or poorly tolerated in some patients. Neuromodulation methods, being element of multimodal treatment, provide an additional treatment option in pharmacotherapy-refractory patients...
January 20, 2017: Neurologia i Neurochirurgia Polska
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
#15
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
#16
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/28155010/chemokine-cxcl13-activates-p38-mapk-in-the-trigeminal-ganglion-after-infraorbital-nerve-injury
#17
Qian Zhang, Ming-Di Zhu, De-Li Cao, Xue-Qiang Bai, Yong-Jing Gao, Xiao-Bo Wu
Recent data demonstrated that chemokine CXCL13 mediates neuroinflammation and contributes to the maintenance of neuropathic pain after nerve injury in the spinal cord. Pro-nociceptive chemokines activate mitogen-activated protein kinases (MAPKs) which are potential signaling pathways contributing to the nociceptive behavior in inflammatory or neuropathic pain. However, whether activation of p38 and JNK MAPK signaling pathway in the trigeminal ganglion (TG) are involved in CXCL13 and its receptor CXCR5-mediated orofacial pain has not yet been clarified...
February 2, 2017: Inflammation
https://www.readbyqxmd.com/read/28153123/temporomandibular-disorders-and-painful-comorbidities-clinical-association-and-underlying-mechanisms
#18
Yuri Martins Costa, Paulo César Rodrigues Conti, Flavio Augusto Cardoso de Faria, Leonardo Rigoldi Bonjardim
The association between temporomandibular disorders (TMDs) and headaches, cervical spine dysfunction, and fibromyalgia is not artefactual. The aim of this review is to describe the comorbid relationship between TMD and these three major painful conditions and to discuss the clinical implications and the underlying pain mechanisms involved in these relationships. Common neuronal pathways and central sensitization processes are acknowledged as the main factors for the association between TMD and primary headaches, although the establishment of cause-effect mechanisms requires further clarification and characterization...
March 2017: Oral Surgery, Oral Medicine, Oral Pathology and Oral Radiology
https://www.readbyqxmd.com/read/28151918/thalamic-pain-alleviated-by-stellate-ganglion-block-a-case-report
#19
Chenlong Liao, Min Yang, Pengfei Liu, Wenxiang Zhong, Wenchuan Zhang
RATIONALE: Thalamic pain is a distressing and treatment-resistant type of central post-stroke pain. Although stellate ganglion block is an established intervention used in pain management, its use in the treatment of thalamic pain has never been reported. PATIENT CONCERNS: A 66-year-old woman presented with a 3-year history of severe intermittent lancinating pain on the right side of the face and the right hand. The pain started from the ulnar side of the right forearm after a mild ischemic stroke in bilateral basal ganglia and left thalamus...
February 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28140499/deterministic-tractography-of-the-descending-tract-of-the-spinal-trigeminal-nerve-using-diffusion-tensor-imaging
#20
Daniel J Burkett, Jonathan R Garst, Jacquelyn P Hill, Anthony Kam, Douglas E Anderson
BACKGROUND AND PURPOSE: Pain information from the face enters the pons via the trigeminal nerve before creating an anatomical "elbow" that turns caudally into the spinal trigeminal tract (SpTV). Visualization of the descending tract of the trigeminal nerve as it begins its descent from the nerve root entry zone (NREZ) in the pons would improve the accuracy of current procedures aimed at altering or lesioning the trigeminal nerve within the brainstem. The focus of this study was to develop a standardized protocol using diffusion tensor imaging (DTI) and deterministic tractography methods to image the SpTV...
January 31, 2017: Journal of Neuroimaging: Official Journal of the American Society of Neuroimaging
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