Hey! I'm new to this site and I just need some advice/help: Since I was young I had problems with migraines. They were very severe and could last for several hours. I went to a doctor, they gave me medication, and they generally stopped. I only really got them every once and awhile. Now as the years have gone on, every once and awhile I get this sudden sensation in my head. I'll just be sitting still and minding my own business when my head just feels full and there is a low, dull ringing in my ears. This occurrence is happening more and more frequently and I don't know if it has to do with my migraines? To be specific: >The feeling is very sudden and lasts for a maximum of a minute. >I suddenly lose concentration and I can't hear quiet noises sometimes. >The back of my head (and slightly the sides of my head) feels full/vibrating. >I hear a dull ringing noise right after/during the sensation in my head. >Sometimes I feel a sense of nausea. >Sometimes I feel really dizzy afterwards. Even now I can feel it slightly. This kind of fullness/pressure in my head. I also feel nauseous. I've looked this feeling up but couldn't find a specific answer.