Wednesday, March 12, 2008
Trigeminal nerve damage
Outlined in the trigeminal nerve damage to the disease, trigeminal neuralgia for the common individual trigeminal nerve devastate rare, accompanied by many other cranial nerve involvement. Cause pathogenesis one. Trigeminal Neuralgia : can be divided into primary and secondary two. Secondary causes of trigeminal neuralgia have ectopic arterial or venous, arteriovenous malformation, aneurysm of the trigeminal nerve root compression. reversed, and the cerebellopontine angle or a half months Festival tumor site, arachnoid Yan induced adhesion, thickening skull tumor and metastasis of cancer, and so on. 2. Trigeminal nerve palsy : Trigeminal nerve palsy from brainstem and the cranial base or extracranial lesions caused. If the brain stem tumor, the trigeminal ganglia, such as herpes zoster. As different etiology, pathogenesis is also different. Caused by inflammation, the trigeminal nerve fibers inflammatory cell infiltration and demyelination; Benign tumor, tumor cell maturation, Tumor suppression trigeminal nerve fibers, fiber degeneration; Cancer transferred to the trigeminal nerve, trigeminal nerve fibers caused devastating change. A clinical performance. Trigeminal neuralgia : in particular facial trigeminal nerve distribution of the radioactive paroxysmal pain, severe nature, Acupuncture was, a knife, burning and tearing kind, sustained a few seconds to a two-minute, sudden suddenly stopped, each of the same pain. I can be pain, or movement of the tongue external stimulation, talk, eat, brush, wash, or even a blink of an eye, Yawn, Other affected by vibration, wind, etc.. Pain often attack a trigger point, or trigger point, the more the upper and lower lips, nasal, numbness of the mouth, cheek and tongue and other places, a little touch to attack that caused pain. Attack pain associated with ipsilateral eye or eyes and tears flowing. Occasionally there facial expressions beyond the control of the convulsion, called "painful twitch." Initially each of pain episodes shorter hours, a longer time interval attack, after the pain gradually lengthening the time-interval time, living in more than. 2. Trigeminal nerve palsy : The main performance of masticatory muscle paralysis of the muscles involved may shrink. Masticatory muscle weak and damaged by patients often are unable to, chewing difficulties, opened his mouth when mandibular deviation to the affected side. Sometimes accompanied by the trigeminal nerve distribution of the ipsilateral sensory dysfunction and corneal reflection on the decline and disappear. A differential diagnosis. Trigeminal neuralgia (1) trigeminal neuritis (trigeminal neuritis) short course, Persistent pain, trigeminal nerve distribution hypersensitivity or unwound associated with movement disorders, involvement in the branches of the trigeminal nerve is obvious tenderness. Neuritis more in a cold or sinusitis after onset. (2) cerebellopontine angle tumors (cerebellopontine angle tumors) Attack with the pain of trigeminal neuralgia or not the same as typical, but more common in young people under the age of 30. many areas of the trigeminal nerve feeling dissipated and may gradually have cerebellopontine angle other signs and symptoms. With cholesteatoma disappearing meningiomas, acoustic neuroma, and other times, the latter two other cranial nerve involvement. Ataxia increased intracranial pressure and performance more obvious. X-ray films, special imaging, CT can help diagnosis. (3) the skull base metastatic cancer (metastatic carcinoma of beae of skul 1) The most common nasopharyngeal, accompanied epistaxis, nasal obstruction, there will be the most cranial nerve palsy, cervical lymphadenopathy. Pharyngeal for biopsy, and the skull base X-ray examination can be diagnosed. (4) the trigeminal nerve tumors and a half months Festival (trigeminal ganglion tumors) Visibility ganglioneuroma, chordoma, can have continuing pain, patients with trigeminal nerve, movement disorders obvious. X-ray skull base may have changed bone damage. 2, the trigeminal nerve palsy appeared individually less often associated with trigeminal nerve pain (trigeminal neuralgia secondary) appear at the same time. Trigeminal nerve paralysis on the differential diagnosis See trigeminal neuralgia.
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