Here's the situation: Sometimes when I'm laying down for a while and I get up, I experience what feels like an incredible rush to the head. It kind feels like blood rushing to your head when doing a headstand or something, but I'm standing up right and it's like 3x as strong. Immediately after, I'm stuck with an very intense pounding/throbbing at the back of my head that sticks around for a while and hurts like all get out. This has happened in the past, but lately has been a regular occurrence even though I can't put any sort of pattern to them. I have a history of having bad headaches, but these are the worst. In fact, my worst episode with such a headache was back in college (about 10 years ago). I was walking back to my dorm room, feeling fine... then I sneezed. As soon as I sneezed, I felt like someone had nailed me in the back of the head with a bat, and the next thing I know I'm picking myself up off the floor. I had to crawl along the walls to get back to my room, the whole time dealing with the pounding and throbbing much like what I deal with now. Of course, I've mentioned this to various doctors, and they never seem to think much of it. But now that it's kinda starting up again (not to mention my blood pressure being moderately yet consistently high), I think I might have to force the issue and have my doc give it a closer look. Have any of you dealt with symptoms like this?