Hi, Friend,
This site lists "ringing" in the ear (tinnitus) as a rare side effect of Seroquel.
http://www.essortment.com/articles/s...cts_104381.htm
I don't know anything about pressing on the your scalp to determine if it is tinnitus.
Call a pharmacist.
My friend used to call the drug company when she got a weird side effect that the dr said didn't exist.
She had a lot of phone patience.
Maybe it is not the Seroquel but something else you are taking.
I'm hoping it will go away.
Some people think that B vitamins can help with ear health -- find a health care professional who knows something about b vits maybe.
M.