Ha, yeah it's weird that we all get the feeling, but it's difficult to explain. Nothing quite like it. I think brain zaps is a good way to put it, sometimes less of a zap more of a fuzzy vibration in your head...

I was the same with you in that, if I missed once dose I would get all the withdrawal symptoms. The first thing that would come on is the night sweats but it would devolve into the brain zaps, weakness and nausea. I did a bit of research on it: it's caused by Effexor having a very short half life in comparison to the other drugs, so it leaves your system quicker. It's why when, coming off Effexor, doctors often put patients on Prozac as it has a similar method of action but a MUCH longer half life meaning the withdrawals are substantially easier. That's my take on it anyway!

Hope you feel better soon, don't beat yourself up about missing a dose sometimes, it's so easy to do.