This is not a super drug that brings instant cures. You will have to use it daily for several month. The device has one or more settings, you will experience a prickling sensation which at times will relax you like a massage, at other times you may feel discomfort or even light pain. When you can't take it any more push the power button again and it will continue to operate at that level. Beginners will have issues, took me a week before I ran full speed ahead. Takes some getting use to.
There are some here that use this device 2-3 times, if you don't want to be serious about it save your money. It will take daily use over weeks before you get results. And again, I got cured. Wohoo !!!!!
Night migranes
Mini-Pill (progesterone) for Migranes
Cefaly if you want to try it
migrane/constant headaches 
constant migrane help
