Visual recognition disorder vertigo
Introduction
Introduction Visual recognition disorder vertigo is a symptom of toxic vertigo. The patient often walks with a head straight and walks straight ahead to move the head to a specific position to induce vertigo, lasting about 30 seconds - 2 minutes, called visual recognition disorder vertigo. Dizziness refers to a kind of illusion of movement of the body to the directional sensory disturbance of the spatial relationship or balance of sensory dysfunction. The patient feels that the environment or itself is rotating, moving and shaking, and often accompanied by balance disorder, standing instability, finger deviation (limb limb The level of the person, the person dumped to one side, nausea, vomiting, pale, sweating and so on.
Cause
Cause
Cause: Inflammation or trauma can also induce this disease, for example, in the process of viral labyrinthitis or chronic suppurative otitis media, white blood cells, phagocytic cells or endothelial fibrin enter the lymphatic fluid; brain trauma or sacral surgery, blood enters the endolymph In the liquid, tangible particles can be formed and deposited on the ampulla dome. According to Barber, longitudinal humeral fractures can occur in 47% of patients with vertigo, and 20% of those without fractures. Dix and Hallpike (1952) reported 100 patients with otitis media, 26% with location vertigo. Ear surgery such as tympanoplasty, mastoidectomy and other injuries to the vestibule, can also be complicated by the disease.
Examine
an examination
Related inspection
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Diagnosis: Children have fewer symptoms and are lighter, and adults are more common and more common. Frequent complaints of tinnitus, dizziness, nausea, vomiting, such as vestibular central involvement, can appear blurred vision, there is a sense of flying mosquitoes, heavy head movements when the vision is unclear, after the head movement stopped, the vision is better. The patient often walks with a head straight and walks straight ahead, called Dandy's syndrome. If the patient is not sensitive to the drug, the symptoms may appear after a large amount of medication, but the symptoms are not dizziness, but drunkenness and instability. If it is chronic poisoning, because the individual compensatory function is good, although the vestibular function is completely lost on both sides, and the patient is still unconscious, after performing the vestibular function test, it is known that there is severe functional damage. The degree of damage on both sides is asymmetrical, sometimes one side is serious and the other side is normal, and the temperature change test may have a dominant bias. There is no direct connection between the vestibule of the cochlea and hearing loss, and sometimes the vestibule is seriously damaged and the hearing can be normal.
Diagnosis
Differential diagnosis
Differential diagnosis of visual recognition disorder vertigo:
1, toxic vertigo: common ototoxic drugs are streptomycin, kanamycin, neomycin, isoniazid, quinine, salicylic acid drugs, organic phosphorus, mercury, aluminum, alcohol, tobacco and other poisoning. Mainly damage the inner ear auditory nerve endings, vestibular organ poisoning causes dizziness, such as the cochlear nerve is also damaged, bilateral sensorineural tinnitus occurs.
2, otogenic vertigo: otogenic vertigo: refers to the vertigo caused by abnormal vestibular vagus. When there is lost water (Ménière syndrome), motion sickness (sickness sickness), labyrinthitis, labyrinthine bleeding or poisoning, vestibular neuritis or damage, middle ear infections, etc. can cause postural balance disorders, vertigo. Because the vestibular nucleus is closely related to the nucleus of the oculomotor through the medial bundle, nystagmus often occurs when the current court is stimulated by pathology.
3, external eye-derived vertigo: vertigo is the general term for dizziness and dizziness, glare with vertigo, blurred vision and dim blackness; rotation with the object, or can not stand as a dizzy, as the two often meet at the same time, It is called dizziness. Eye-induced vertigo: non-motor illusion vertigo, mainly manifested as instability, increased when the eye is excessive, and relieved after closed eyes. Dizziness lasts for a short period of time. When you look at the moving objects, you will get worse. After you close your eyes, you will ease or disappear. Often accompanied by blurred vision, decreased vision or double vision. Visual acuity, fundus, and eye muscle function tests are often abnormal, and the nervous system has no abnormalities.
4, cervical vertigo: cervical vertigo refers to the cervical vertebrae and related soft tissue (joint capsule, ligament, nerve, blood vessels, muscles, etc.) generator caused by qualitative or functional changes.
