Tinnitus is a kind of ear problem that requires the tinnitus treatment in which ear and the head feel a noise. If you feel that you are hearing the noise only at one side of head, then you should seek the tinnitus treatment from the doctor. Tinnitus actually point toward some other problem. It is actually the symptom of any other problem. Sudden tinnitus is dangerous and you should timely notice the problem and inform about it to doctor. Sometimes tinnitus can cause loss of hearing. If you feel that tinnitus is matching with your heartbeat, then it is worst. You should not waste the time and quickly run to doctor. When a blood vessel bulges with some other thing, it can cause the tinnitus that matches with the heartbeat. This is a kind of rare tinnitus. If you feel tinnitus and problem in movement and walking, then it is a symptom of stroke. You should again report it to doctor for better medication.