I'm quoting this because it's close to what one of the neurologists I used to work for would tell me to do when I told him I didn't want another pill... he said to take a warm/hot bath and put a cold rag across my forehead to my temples. Or set a bag of cold, well whatever you can make up in your house, ziploc baggie of ice with a towel around it, etc. on top of your head. It slows down the blood pumping through your head. Same effect the above is going for, whichever you prefer the shower or tub I guess. (with the exception that you aren't experiencing any blood pressure issues because hot baths can effect this, I got in a hot bath once while I had pre-eclampsia and couldn't feel my legs when trying to get out, a crazy funny story!!!)