Causes of ear buzzing one is because the flu colds are not treated correctly.
If you experience ear buzzing, try the check to a specialist because if not treated properly it is feared will continue even worse that could be like the ear next to it.
About the causes of ear buzzing more likely number of dirt clogging of the external ear or due to inflammation. Therefore the sound waves cannot enter. Handling by means of cleaning up the poop.
Frequent colds and nasal congestion can also cause the eardrum is inflamed or leaking. Then could have been the presence of fatigue on the sensor and the nerves of the ear, because it often heard the noise of the engine, as they often wear the headset for a long time, or calling using a mobile phone so that the ears be buzzing. As for the possibility that others could also be just the presence of other diseases such as diabetes.
Therefore the check as soon as possible to a specialist or conducting audiometry test to know the condition of your ears.