I am having serious health anxiety over a brain tumor. I dont really have many symptoms right now though I get symptoms on and off. For instance. I hear a constant ringing in my right ear that's not too high pitched. Granted I blast music in my ear buds but why would it only be one ear? Also I noticed as I was falling asleep my lower jaw was trembling. It was opening and closing. That would explain why my tounge is sometimes sore. I'm worried this could be a seizure due to a brain tumor. I am also always off balance and have vision symptoms but I am supposed to be wearing glasses and havent for 5 years. Also I do have a very mild form of sleep apnea. My main concern now is the jaw trembling, teeth chattering while sleeping though. Can these things be caused by other things other than seizures? That's all I'm seeing on google.