My head feels like it's exploding...?!

My head feels like it's exploding...?

Anytime during the day or night, I get these sudden throbbing pains in my head. They are so bad sometimes that I actually feel like my head is going to explode. I don't know how long they last for (definately less than 2 mins though), my vision is blurry for a few seconds and i'm dizzy for a few seconds but then everything is fine again. It happens sometimes more than 10 times a day. I have been to a doctor and they said it was stress...but I am not under any stress and they are getting worse. Does anyone have a clue of what is causing this...?
Thanks.

I'm no expert, but it could be lack of sleep or food. anorexia or bulemia can cause similar symptoms, also epilepcy might be an option to explore. A common problem most people suffer from but don't find out until later is low bllod sugar, hypo or hyperglycemia. and the last thing i could think of is a brain tumor or hemorage. make sure your doctor does an MIR or Catscan. if he refuses, get a new doc. Another source to try is to read on of those home remedy books, it might have something in there. also remember you can be stressed out with out even realizing it. i hope you can get better. best of luck.