Hello, I am trying to find any info on my Rat's problem. when he is getting sleepy, his head shakes back and forth. Not up and down, back and forth. It looks somewhat like a seizure. When he sleeps he jerks non stop. He has done this since he was a pup and he is now 6 years old. He is not distressed over this, but it concerns me that he is having seizures at night when he sleeps.

I took him to a internist today, and she is going to run several tests on him.

Does anyone know of anything in a Rat's breed that would cause this, or anyone have this happen to their Rat. Any information or advise would be very appreciated.

Thank you!