Audiological evaluation of hearing levels in patients diagnosed with migraine
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Introduction: Based on the hypothesis that neurovascular events involving in the pathophysiology of migraine can cause hearing loss by influencing blood flow of inner ear, it was aimed to determine whether migraine with or without aura in our clinics patients are at risk for hearing loss by assessing hearing levels via a high-frequency audiometry, acoustic reflex and transient otoacoustic emission responses; to discriminate whether hearing loss is cochlear or retrocochlear originated, if present; and to evaluate whether or not migraine treatment affect hearing level in patients received treatment for migraine in this study. Materials and Methods: The study included patients who were diagnosed as migraine between December 2011 and December 2012 at Neurology Department of Cumhuriyet University, Medicine School according to ICD-II classification and accepted to receive medical therapy. In all patients, hearing levels were measured at baseline and after treatment by using high-frequency audiometry, transient otoacoustic emission and acoustic reflex tests. Results: In the present study, hearing thresholds measured in the right ear was normal in migraine patients with or without aura at baseline, while mild hearing loss was detected in right ear at the frequency of 500 Hz after treatment when hearing thresholds at different frequencies were compared. This difference was significant (P < 0, 05). When hearing thresholds in right ear at baseline and after treatment was compared, mild hearing loss was detected at the frequency of 250 Hz in migraine patients with aura. This difference was significant (P < 0, 05). In migraine patients with aura, hearing was normal in all patients at baseline, while in both ears mild hearing loss was detected in 2 patients (8.7%) after treatment. This difference was not significant (P > 0, 05). Conclusion: Differently from literature, hearing loss in our patients developed at lower frequencies and after treatment. The results we obtained from our study also presented that there might be a relationship between migraine disease and sensorineural hearing loss.
SourceINDIAN JOURNAL OF OTOLOGY
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