Hello for quite a number of years I have been experiencing an intermittent drumming in my ears. It usually sounds like a drumming sound. The sound is like a large beat and then three to four quick beats with some swooshing then stops. It sort of makes me feel a little dizzy, a bit mentally foggy when it happens. It will happen maybe 5 to 20 times in a day and increases with certain background noises. It will also happen under stress and non stressful conditions.