hello i am a 32 y.o. male with a severe head shaking problem, my neck muscles ache and my neck is very tence, i then feel a strange feeling that fills the back of my head, then causes me to shake my head, i try to control it but its very difficult to stop, i had this as a kid for many years,it went away and has recently returned, have you heard of this problem and is there anything i can do to solve this problem, thanks