Tinnitus may be an intermittent or continuous sound in one or both ears. Its pitch can go from a low roar to a high squeal or whine or it can have many sounds. Persistent tinnitus is tinnitus that lasts more than six months. Prior to any treatment, it is important to undergo a thorough examination and evaluation by your otolaryngologist (ENT doctor) and audiologist. An essential part of the treatment will be your understanding of tinnitus and its causes.