The US Food and Drug Administration (FDA) today allowed marketing of the first device for the preventive treatment of migraine headaches (Cefaly, STX-Med). It is also the first transcutaneous electrical nerve stimulation (TENS) device specifically authorized for use before the onset of pain, the FDA noted in a statement released today. "Cefaly provides an alternative to medication for migraine prevention," Christy Foreman, director of the Office of Device Evaluation at the FDA's Center for Devices and Radiological Health, said in the statement. "This may help patients who cannot tolerate current migraine medications for preventing migraines or treating attacks." The device,...