Vertigo Causes and Tests Dizziness or vertigo is the sensation of loss of balance as if everything is revolving around the patient suffering from this condition. Dizziness can be caused by a number of different factors, including a variety of problems within the balance control mechanism itself. The way we control our balance is a complex process involving various parts of the body. Vertigo and Dizziness can be explained as a feeling of “floating”, lightheadedness or “giddiness”. Vertigo includes a variety of sensations that can mean different things to different people. If you have ever been dizzy, you may have found it difficult to describe exactly how it made you feel. Some people who report feeling dizzy say they feel as if everything is spinning around them, or as if they are spinning or turning themselves. This is what doctors usually mean when they refer to vertigo. Others describe feeling unsteady or wavering as if they were on a boat. Dizziness or vertigo can be caused by a disturbance in a particular part of the inner ear – the vestibular system. This is the part of your balance system that provides your brain with information about changes in head movement with respect to the pull of gravity. When your vestibular system is not working properly, you may suffer from dizziness, vertigo, imbalance, disorientation and possibly nausea and vomiting. Dizziness cure is possible. For vertigo treatment, you should immediately visit a vertigo clinic near you. Vertigo and balance disorders are fully treatable through manoeuvres, medical care and vertigo exercises. Various vertigo tests can be done to diagnose the condition. The Video Nystagmography (VNG) investigation evaluates the vestibulo-ocular reflex (VOR), which is an important part of the vestibular system to maintain balance. It also evaluates the oculomotor system, responsible for gaze stabilization and fixation. Using VNG, the doctor can evaluate and distinguish between peripheral and central vestibular disorders functions; decide the side
affected and, in case of BPPV, determine the position of the otolith within the semicircular canals. Subjective Visual Vertical (SVV) is the test for the otolithsystem (the utricle and saccule) which is responsible for perception of verticality, and is especially useful for patients of chronic unsteadiness. Electronystagmography (ENG) is available at NeuroEquilibrium Diagnostic Systems apart from the Video Nystagmography (VNG), which is a far more advanced test. As in VNG, this investigation evaluates the vestibulo ocular reflex (VOR), which helps in maintenance of balance. It also evaluates the oculomotor system, which is responsible for gaze stabilization and fixation. It helps to evaluate peripheral and central vestibular functions. Dynamic Visual Acuity (DVA) is an investigation for detection of peripheral vestibulopathy and early detection of vestibulotoxicity. It assesses the ability of the subject to maintain the image on the fovea during head movement. This is an important function of VOR (vestibulocular reflex). In normal persons, the image of a moving target is maintained on the fovea by VOR. When the VOR system is impaired, visual acuity degrades substantially during head movement as the subject is not able to maintain the image on the retina, resulting in retinal slip and blurring of
vision with a feeling of instability. Vertigo is entirely treatable with the right diagnosis and the right equipment.