sorry to hear you may be a suffer , i`ll been a sufferof cluster headaches for nearly 15 yrs now ,no fun either. I never recall ever becoming dizzy or stuff but I have my trigers down now that I can tell pretty much when one is coming on unless i`m asleep and that has happen alot , i`d wake up in the night with one and its to late for pain medications then ,its a long night i`ll tell you!!!!My cluster headaches usualy lasting on average 4 to 5 hours at the end I literally throw up (sorry for the bluntness) !! Mine usually come on about every 26 to 30 hours you set a watch by them really!!!! My doctor has me on lithuim and perocet for pain ,work good for me , except it takes about 10 to14 days for the lithuim to level out and pervent them from coming on ,but it does work pretty good for me ,ho[pefully you too. Best of luck to you from one suffer to another you`ll be in my prayers