Do you have ringing in your ears? Does it sound like a high-pitched sound, crickets, music, voices, a freight train? These experiences are defined as tinnitus. If you have it, you are not alone, some reports claim that close to 90% of people experience tinnitus at some point in their lives. Tinnitus is the perception of a sound in the ears or in the head without the presence of an external source generating the sound. It is important to know that tinnitus by itself is not a disease but often a symptom that is caused by a variety of factors. Tinnitus can be intermittent or constant, subjective (only heard by the person with tinnitus) or objective (can be heard by an examiner as well), and perceived as loud and annoying, or soft and tolerable.