Anyone who's ever experienced a migraine knows how excruciating these headaches can be—sometimes pushing you into a dark room, curtains drawn, in hopes of a quick end to the throbbing, painful misery. Now, a new study suggests that there may be a drug-free alternative to treating some migraines: a hand-held transcranial magnetic stimulation device that, when held against the bottom of the back of the head, eased migraine symptoms in some study volunteers.