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.).
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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.
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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