Introduction: The aim of the study was to identify the prognostic factors and the relationship between vertigo and the results of objective assessment of the vestibular organ and the levels of thyroid status in patients with Hashimoto's thyroiditis.
Material And Methods: The study population consisted of 28 women with Hashimoto's thyroiditis and coexisting chronic vertigo. In all patients, audiological assessment of hearing (tonal audiometry and impedance audiometry), Dix-Hallpike manoeuvre, caloric test, and kinetic tests (rotary chair test and swing chair test) were evaluated. Thyroid hormone levels [thyroid-stimulating hormone (TSH), free thyroxine (FT4)] and thyroid antibodies [autoantibodies against thyroid peroxidase (anti-TPO) and thyroglobulin (anti-TG)] were determined. The relationships between age, weight, height, and BMI and the results of the objective assessment of the vestibular organ were calculated.
Results: In the study group the mean age was 48 years and the mean BMI was 26.425. Normal hearing was found in 15 patients (54%). BPPV (n = 19), followed by Meniere's disease (n = 7) and vestibular neuronitis (n = 2), were the causes of chronic vertigo in this group of patients. The analysis of the objective assessment of the vestibular organ showed decreased excitability of the labyrinth in 15 patients (54%). Twenty-four patients presented with normal TSH and FT4 levels (85%). All patients presented with elevated anti-TPO and anti-TG levels.
Conclusion: No correlation was found between age, weight, height, BMI, and the results of thyroid function tests or the assessment of the vestibular organ. We did not confirm the negative influence of thyroid levels or the increase in thyroid antibodies on the abnormal results of the rotary chair test or the caloric test.
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