Tinnitus aurium is a clinical entity that is quite prevalent. A simple definition of tinnitus is noise in the head. It may be transitory or constant, rhythmic or irregular, soft, medium loud, or loud. It may or may not be synchronous with the pulse rate. It may be totally involuntary or it may be partly or wholly controlled under certain conditions.
The noise may be a hum, a click, a tick, or soft blowing in character. Usually it is audible only to the patient, in which case it is termed subjective tinnitus. However, in rare instances, the head noise is audible to the examiner as well. In this case, it is described as objective.
Certain cephalic murmurs, caused by an arterial aneurysm or an engorged cranial vessel, can be heard by means of the stethoscope. This type of cephalic auscultation was formerly practiced extensively, but now it is rarely resorted