Tinnitus is not a disease but rather a symptom. Tinnitus is the perception of a sound in the ears or head and is not connected in any way to the presence of external sound stimulation to the person. It is a sound that is present in one or two ears or even in the head and that lasts more than 5 minutes and occurs more than once a week. A sudden transient sound in the ear or in the head that fades within 1 minute is not a tinnitus. If it sounds in your head for a duration of more than 6 months, it can be said that it is a chronic or permanent tinnitus.