Can somebody tell me, what's that ringing sound in the ears which prevails even when somebody is in quiet surroundings? Is that sound real or just created by our brain due to some sort of malfunctioning? Some scientific explanation would be more apt.
EDIT1: As far as I have observed my body, I found neck pain(most likely cervical spondylosis) to be a prominent reason for this. But the wiki article, as referred by a user, doesn't point include it. So, I'm now curious to add this to the question as well. If there is any valid study that pin-points cervical pain to be a reason for Tinnitus?
EDIT2: Please don't downvote since I'm not asking for diagnosis. But want to know what physical & chemical changes could be behind this issue.
My facts: I observed, that cardio exercises and outdoor gaming activity, temporary eradicated this problem. The longest relief span recorded by me was 2 days. I can understand that exercise improves the blood flow which could have helped, but what continued the relief for 2days?