First of all, what is ACIM? It is a perception of sound in proximity to the head in the absence of an external source. It can be perceived as being within one or both ears, within or around the head, or as an outside distant noise. The sound is often a buzzing, ringing, or hissing, although it can also sound like other noises. According to the American Tinnitus Association, an estimated 50 million people in the United States have chronic ringing, persisting for greater than six months. For 12 million…