Hello. For last few years i am experiencing a stange in the back of my head. I find it extremely difficult to narrate what exactly i feel. I feel vibrating, throbbing, pulsating sort of proble which gets worse when i talk, walk, eat, etc. There is no pain but tremendous uneasiness. I frequently grab back of my head to relieve myself which doesnt help. I am professionally a police officer working on computer all day long. I am a migraine patient since childhood. Anybody who may help me out.