I have had these strange headaches ever since I have been 11 they started the same year I got my period. The headache would come on all of sudden as a sharp shooting pain in the back of my head. It would only last for a second the strange thing is I would hear a noise with them. The only thing I can compare the sound to is the fiz sound soda makes. Sometimes the headache occurs 4 to 5 times within a five minute peroid the pain is so intinse it leaves me with awful dull headache. I have never vomited with my headaches. I have passed recently three times due to these headaches it was three times during a ten week period. The last time I passed out was three months ago. I have gone to family doctor and informed him of my syncope issues and my headaches ekg, echo, MRI of my brain, and EEG everything came back normal. Then they a 24 hour halter monitor and they found PVC's the cardiologist I met with was not that concerned. When I was 16 the headaces became so intense I stayed in bed for a week. Luckily they went away gradualy. I have only had two times in my life when the headaches went away for a significant amoun of time. The first was when I pregnant I was told take a 81 mg aspirin because I had thick blood no big deal so I thaught. My doctor told me to stop taking the aspirin at 34 weeks. Well thankgoodness he had the due dates mixed because I actually stopped at 35 weeks no sooner did I stop three days later I went into sevre preclampsia and I had HELLP. I was very sick. The other thing is during those three days the headaches came back and they were strong and painful. After I had my baby three months later the syncope issue occured. The second time the headaches disappeared was after I started excersising daily to lose my pregancy weight I stated this routine three weeks ago and I only had one one second head since then. If anybody has ever heard of these I would and if you have any questions please ask.