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Home • What is Headshaking? • Symptoms & Checklist • Causes • Diagnosis & Treatment • TCM Therapy • Research • Case Reports • Contact |
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Research and Theories At several Universities world wide the HS syndrome is being researched, theories tested and new ones developed. Veterinarians are coming together at national and international levels to discuss causes and treatments, and exchange experiences. More disorders are being linked to and derived from Headshaking syndrome. Before we start with the subject in itself I like to add a word about this site and the material offered. Headshaking is not an simple matter, various reasons and facts are known leading to this disorder. I will not shake or doubt these studies nor will I publish anyone's doubts about a scientifically proven matter. I will not judge the horse owner's thoughts. Owners, which were kind enough to permit publication of their horse's story. These stories are thought to be examples of the variety of symptoms and types of HS and they are very personal. Respect towards the people helping with their material, no matter what kind, to build this page is of highest priority! I'm not a veterinarian nor will I give any advise in what the horse might suffer from. This website was initiated by my horse's ordeal (Telcaro) and I found it to be of a very serious matter with not enough information on any website I have read. Standard info was just not enough for me and talking to other owners lots of them felt the same way. In order to understand what YOUR horse is suffering from, please have it examined thoroughly (incl. scans, full body orthopedic exam, x-rays, aso) a specialized clinic, even if it takes lots of your hard earned money, if you intend to keep your horse. Only then you might be able to really help him or her. I already know some of you will be sayings: 'well, this works for him or that does', but this or that might wear thin after a period of use. This page is intended to look up more in-depth info or to get an idea if your horse might be suffering from HS by looking up some symptoms and some stories. Ok, having said this, let's have a deeper look into HS. Trigeminal neuralgia is an example of a disorder of the trigeminal nerve where the sufferer suffers pain in the territory of the trigeminal nerve innervation. It is an area of discordance among the medical professionals. Most of them believe that the deterioration of the myelin (protective coating of the nerve) allows the transmission of abnormal messages of pain. Problems with the sensory part of the trigeminal nerve result in pain or loss of sensation in the face. Problems with the motor root of the trigeminal nerve result in deviation of the jaw toward the affected side and trouble chewing. One of the newest studies from France indicates that grain of any kind is causing similar neurological disorders in human than nerves gases have caused in various wars all over the world. These particular gases contain same substances as used in herbicides, pesticides, and insecticides used more or less in agriculture. The connection to horse feed is made and the research is going in this direction. Another study links the Trigeminal Neuralgia (TN) in horses to the exposure of equine herpes virus Type 1 (EHV-1), Dr. Knottenbelt, Liverpool, UK; Dr. Madigan, UC Davis California, USA. "A trigger may come from the trigeminal
ganglion. "Tugging" on the muscles can result in pain. The
trigeminal ganglion may become mechanically sensitized; sodium,
outside of the nerve, gets inside the nerve, where the potassium is.
These are called "sodium channels" and the channels are
increased through light touch or compression. Jane Uitti's notes from the 1998 TNA Convention; with permission re-published. Then again a very new aspect is taken into consideration by almost all major studies: the factor STRESS. The studies of Mrs. Annabelle Knight, UK, receiving a lot of attention due to her incredible results if curing, yes, curing! HS horses with adrenaline maladaption induced disorder. Read her theory below. I have found an incredible amount of theories, proven by scientific evidence and studies, which often are build on existing theories and, through further studies and trials, extending into new theories. Non of these theories and studies should be dismissed, the long a scientifically background is given. Under the chapter " Warning" I will list 'so called theories' I came across, which I uncovered as pure bogus and the only fundamental base these 'theories' have is to develop trust in the already frustrated owner by establishing hope, in the end only to pull his hard earned money out of his pockets for nothing and gimmick. This part of the website is the most extensive one, the heart of the scientific subjects; over time you will find more and more links and updates to theories and medical issues explained. We are in contact with veterinarians and researchers all over the world, which permit us to re-publish their case studies, findings and theories. Under each topic headline the various theories, treatment plans and case studies are listed, references made. Click on links below to go to subject In order to understand the development of HS and why it is so difficult to cure it, one has to start at the very beginning of the whole matter: the understanding of PAIN, CHRONIC PAIN to NEUROPATHIC PAIN. Followed by the understanding of STRESS and its effect on the IMMUNE SYSTEM and the reaction of the ADRENALINE GLAND. Finally we will take a look at the TRIGEMINAL NERVE and the different types of HEADSHAKING
Theories and Studies & Articles Author: J Stephen Huff, MD, Associate Professor of Emergency Medicine and Neurology, Department of Emergency Medicine, University of Virginia Health System writes: Pathophysiology of Trigeminal Neuralgia: The mechanism of pain production remains controversial. One theory suggests that peripheral injury or disease of the trigeminal nerve increases afferent firing in the nerve; failure of central inhibitory mechanisms may be involved as well. Pain is perceived when nociceptive neurons in a trigeminal nucleus involve thalamic relay neurons. Abnormal vessels, aneurysms, tumors, chronic meningeal inflammation, or other lesions may irritate trigeminal nerve roots along the pons. Uncommonly, an area of demyelination, such as may occur with multiple sclerosis, may be the precipitant. In most cases, no lesion is identified, and the etiology is labeled idiopathic by default. Development of trigeminal neuralgia in a young person suggests the possibility of multiple sclerosis. Lesions of the entry zone of the trigeminal roots within the pons may cause a similar pain syndrome. Thus, although TN typically is caused by a dysfunction in the peripheral nervous system (the roots or trigeminal nerve itself), a lesion within the central nervous system may rarely cause similar problems.
[all material is being re-published with permission of authors] All articles published in this website are copyrighted by either authors, original publishers or by Equine World Wide bvba and cannot be re-published in whole or in parts without a written consent. Disclaimer: I produce this website and information within as a public information source; I'm not employed by any company mentioned in this website nor do I endorse or distribute any product of any company relating to Headshaking.
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