[Etiology and clinical symptoms of bilateral vestibulopathy]

[Vestibular rehabilitation for peripheral vestibular hypofunction: an interdisciplinary consensus]

The literature review presents approaches to the management of patients with vestibular disorders. The principles of organization of vestibular rehabilitation in peripheral vestibular hypofunction, indications for appointment, factors influencing its implementation, technique, methods of evaluating effectiveness are considered in detail. Attention is drawn to the fact that the selection of exercises and the duration of vestibular rehabilitation is carried out individually and depends on many factors, including the nature of vestibular deficiency and the specific characteristics of the patient. The possibilities of using additional pharmacological therapy with histamine preparations, which can accelerate the onset of vestibular compensation, are shown. It is noted that vestibular rehabilitation is a safe and effective method of treating peripheral vestibular hypofunction and should be recommended to patients of all ages with vestibular disorders leading to limited social and physical activity.

[Bilateral vestibulopathy and sensorineural hearing loss in necrobiotic xanthogranuloma, multiple myeloma and amiloidosis]

This article describes a rare case of necrotic xanthogranuloma in a 46-year-old patient who presented with the development of periorbital xanthelasms, progressive bilateral sensorineural hearing loss and bilateral vestibulopathy, followed by multiple myeloma and amyloidosis. For several years, the patient underwent standard rehabilitation for chronic sensorineural hearing loss and was fitted with a hearing aid. During hospitalisation for exacerbation of chronic bronchitis, monoclonal gammopathy was identified, and later, after careful examination and repeated biopsies, necrotic xanthogranuloma, multiple myeloma and AL-amyloidosis were confirmed. Targeted immunochemotherapy resulted in improvement of hearing and significant recovery of the vestibuloocular reflex bilaterally.

[Rehabilitation in bilateral vestibulopathy: trends and perspectives]

A review of the literature on rehabilitation methods for bilateral vestibulopathy is presented using RSCI, Scopus and PubMed databases. The principles and effectiveness of physical vestibular rehabilitation, vestibular implants, galvanic vestibular stimulation, and biofeedback-based sensory substitution and augmentation systems are described. The advantages and disadvantages of each method and perspectives for their improvement are presented.

[Dissociation of the results of caloric and video head impulse tests as a marker of Meniere's disease]

The study of vestibular function in patients with Meniere's disease (MD) is an urgent task, since it influences the choice of treatment tactic. We evaluated the results of caloric and video head impulse (vHIT) tests in 76 patients who met the clinical criteria for significant Meniere's disease (AAO-HNS modified by the Barany Society, 2015). Dissociation of the results of caloric and vHIT tests is observed in the majority (74%) of patients with MD: at normal gain, according to vHIT data, hypofunction of peripheral vestibular structures is recorded according to the caloric test (KASL 47 ± 7.8%). In patients with MD, vestibular dysfunction is observed mainly at low frequencies (0.003 Hz), therefore vHIT, which allows assessing horizontal semicircular canal function at high frequencies (3-5 Hz), is not an optimal study for assessing the degree of vestibular dysfunction in patients with MD.

[Clinical diagnosis and treatment of chronic dizziness]

Chronic dizziness is defined as a complex of symptoms lasting months or years, including oscillopsia, nystagmus, and postural instability. Diagnostic search includes peripheral vestibulopathy - chronic unilateral vestibulopathy resulting from vestibular neuronitis, schwannoma of the 8th pair of cranial nerves, medical or surgical ablation of the labyrinth, and bilateral vestibulopathy; central vestibulopathy - syndromes accompanied by central vertical nystagmus, small vessel disease in patients with chronic cerebral ischemia; general somatic diseases, peripheral polyneuropathy, side-effects of medications as well as persistent postural-perceptual dizziness. Often, when collecting an anamnesis, it is not possible to identify specific features of dizziness and instability, therefore, clinical and instrumental examination of the patient is of particular importance. In the otoneurological examination, the greatest attention is paid to static/coordination tests, oculomotor tests aimed at identifying signs of damage to the vestibulo-ocular reflex. The principles of treatment depend on the diagnosed cause of dizziness and instability and can, to varying degrees, combine pharmacotherapy, vestibular rehabilitation and psychotherapy, as well as correction of therapy for the underlying disease that caused vestibulopathy.