There are many causes. Many problems with the ear have tinnitus associated with it as a symptom. Problems ranging in severity from overproduction of wax to ear infections can produce tinnitus. One of the most common causes of tinnitus is exposure to excessively loud sounds either on the job (musicians, carpenters, pilots) or recreationally (shooting, chain saws, loud music). Sometimes problems not associated with the ear can cause tinnitus, such as disorders or the cervical vertebrae (neck) or the temporomandibular (jaw) joint. It's important to note that more than 200 prescription and non- prescription drugs list tinnitus as a potential side effect.