The term tinnitus aurium (from the Latin “the ringing of the ears”) or short tinnitus describes the perception of sound within the human ear in the absence of corresponding external sound. The person affected, thus, hears noises that have no perceivable outer source. A “subjective tinnitus” is a symptom of an underlying illness of the inner ear. It is sometimes also referred to as a syndrome. Unlike this the “objective tinnitus” is caused by an endogenic source (= a source within the own body) which is discernible or at least measurable. Objective tinnitus though is very rare in comparison to subjective tinnitus.