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Title: A study of cochlear and auditory pathways in patients with tension-type headache.
Author: Shen H, Hao W, Li L, Ni D, Cui L, Shang Y.
Journal: J Headache Pain; 2015; 16():557. PubMed ID: 26272682.
Abstract:
BACKGROUND: The purpose of this study was to systematically evaluate the function of cochlear and auditory pathways in patients suffering from tension-type headache (TTH) using various audiological methods. METHODS: Twenty-three TTH patients (46 ears) and 26 healthy controls (52 ears) were included, and routine diagnostic audiometry, extended high-frequency audiometry, acoustic reflex (ASR), transient evoked otoacoustic emissions (TEOAEs), distortion product otoacoustic emissions (DPOAEs) and suppression TEOAEs were tested. RESULTS: The TTH group showed higher thresholds (P < 0.05) for both pure tone and extended high-frequency audiometry at all frequencies except for 9, 14 and 16 kHz. All ASR thresholds were significantly higher (P < 0.05) in the TTH group compared with the controls, except for the ipsilateral reflex at 1 kHz, but the threshold differences between the ASR and the corresponding pure tone audiometry did not differ (P > 0.05). For the DPOAEs, the detected rates were lower (P < 0.05) in the TTH group compared with the controls at 4 and 6 kHz, and the amplitudes and signal to noise ratio (S/N) were not significantly different between groups. No differences in the TEOAEs (P > 0.05) were observed for the detected rates, amplitudes, S/Ns or contralateral suppression, except for the S/Ns of the 0.5-1 kHz TEOAE responses, which were significantly higher (P < 0.05) in the TTH group. CONCLUSIONS: The results of our study indicate that subclinical changes in cochlear function are associated with TTH.

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