Abstract
Aims: To compare the clinical characteristics of tinnitus among patients with somatic tinnitus (ST), otic tinnitus with somatic modulation (OT+) and otic tinnitus without somatic modulation (OT–), and to examine differences in somatic modulation between patients with ST and OT+. Methods: We retrospectively reviewed the medical records of 65 patients with unilateral tinnitus and classified the patients into three groups: ST (n = 24), OT+ (n = 21) and OT– (n = 20). Results: Only one difference in clinical characteristics was found between the OT+ and OT– groups. Maneuvers related to the temporomandibular joint showed the highest frequency of somatic modulation in both the ST and OT+ groups. There was no significant difference between the ST and OT+ groups with regard to the rate of somatic modulation or the rate of increase or decrease of tinnitus among all aspects of somatic testing. Conclusions: The presence or absence of somatic modulation does not influence the clinical characteristics of otic tinnitus, and the somatosensory-auditory interaction is a general auditory physiologic phenomenon.
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