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Lhermitte's signLhermitte's Sign, sometimes called the Barber Chair phenomenon, is an electrical sensation that runs down the back and into the limbs, and is produced by bending the neck forward. The sign suggests a lesion of the dorsal columns of the cervical cord or of the caudal medulla. Although often considered a classic finding in multiple sclerosis, it can be caused by a number of conditions, including Behçet's disease,[1] trauma, radiation myelopathy,[2] vitamin B12 deficiency (subacute combined degeneration), and compression of the spinal cord in the neck from any cause such as cervical spondylosis, disc herniation, tumor, and Arnold-Chiari malformation. Additional recommended knowledgeStrictly speaking, the Barber Chair phenomenon is a symptom rather than a sign as it describes a subjective sensation rather than an objective finding. To add more confusion, it is not attributed to its discoverer.[3] It was first described by Marie and Chatelin in 1917.[4] Jean Lhermitte did not publish his first report until 1920.[5] However, in 1924 he did publish the seminal article on the subject which resulted in it becoming well known.[6] Most modern editors prefer the non-possessive form for medical eponyms: Lhermitte sign. References
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This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Lhermitte's_sign". A list of authors is available in Wikipedia. |