A perceived tone of varying volume and pitch of which the patient is aware, although no sound is audible to anyone else. Some clinicians suggest it is a secondary manifestation of tinnitus (q.v.).
Medical Dictionary for the Health Professions and Nursing © Farlex 2012
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Somatic tinnitus, also known as somatosound, refers to the perception of sound that originates within the body--in vascular, muscular, skeletal, or respiratory structures, or in the temporomandibular joint.
* Pulsatile tinnitus, which pulses in synchrony with the heartbeat, is the most common somatosound. (15,16) Most patients with pulsatile tinnitus have benign venous "hums" but serious conditions such as arteriovenous malformations, glomus tumors, and carotid stenosis must be considered.
* Somatosounds can also be nonpulsatile, indicating a nonvascular source.
While subjective tinnitus consists of noises only the patient can hear, objective tinnitus refers to noises, including somatosounds such as turbulent blood flow or palatal myoclonus, that a physician could at least theoretically detect by auscultation or with an amplifying device.

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