I have constant ringing in my ears. Recently, my right ear started ringing very much more loudly than normal.A few minutes later the sounds picked up by that ear sounded like a damaged loudspeaker. Sounds rattled and at the same time sensitivity in the left ear seemed reduced along with a fullness in the left ear that I ve had when I ve had severe head colds. This all last 8-10 hours or more but overnight things are normal the next day, or as normal as can be with ringing in the ears.