I have them off and on. Could not figure what was triggering them. I knew my magnesium was low (I have monthly blood work) When the Doc increased my magnesium dose my headaches have pretty much gone as have finally my most severe muscle spasms. Hopefully it will continue because my legs are still bruised and sore from the spasms and its been 2 weeks. Headaches are not enough to put me in a dark room with the heating pad to my head anymore. Good luck on getting rid of them or at least controlling them. They are the PITS!