Statistics show that at least 10 -15% of the population suffering an episode during the life of such phenomenon.
Perceived noise can have a frequency which is usually high (not always) and that can vary in intensity.
Is a noise which usually lasts some time (so it's not a ringing of few seconds) and significantly interfere with individual quality of life.
Causes.
Several theories have been issued, many neurological (brain perceives wrongly) or psychological (tinnitus is a symptom that is an expression of individual life stress factor).
But, according to a study published on the BBC News website, researchers are on the brink of discovering a cure for tinnitus, after they learned that it triggers: damage hearing goes hand in hand with nerve cells in the brain, producing these sounds.
What are the symptoms? First is a constant sound, leading to:

• Significant decrease of auditory attention: the frequency of the tinnitus occurs is blocked and the person focuses more difficult to analyze auditory stimuls in the environment;
• Felt more intensely irritable: that person "can not find serenity, literally and figuratively;
• Sleep problems: sometimes the intensity noise is so great, that person can not sleep or awakened during sleep;
• Is a degree of aggressiveness: the fatigue and inability to solve the problem, is a state of frustration and aggression, which usually follows irritability;
• Communication conflicts with others: the person may lose patience easily when not hear or understand when others do;

We also talk about hearing disorders which have tinnitus symptoms tinutusul - as otosclerosis - but trigger cause is very difficult to explain.
What are the treatment options?

1. Causing a noise through the headphones or music player to follow a complementary frequency, thus canceling the tinnitus noise.
   Warning! Only one ENT specialist can do this treatment.
   
2. Psychological treatments, biofeedback, or relaxation techniques, the detachment of tinnitus and the acceptance of it.
   

We can prevent tinnitus? It is a symptom that occurs suddenly, methods of prevention include:

• Good hygiene of the auditory apparatus;
• Not listen to headphones at high volume and not a great time;
• Not sit next to a speaker when you go to a concert;
• Avoid exposure to loud noise and long term exposure.
  

Study: MP3 players can cause tinnitus Late last year, British researchers have drawn attention to prevent tinnitus, considering the difficulty of treatment.
Therefore they suggest to companies producing MP3 players to limit their volume, they may adversely affect hearing.