My early success with the Cefaly, the external nerve stimulator I told you about last summer, didn’t hold up. I used it for at least an hour a day for six months, over which time my relief from it decreased from three hours a day to no relief at all. None of the published studies on the Cefaly talk about this happening, but none of them studied its use for more than a few months.
The Cefaly can be used to stop migraine attacks in progress (and to stop other types of headaches, according to the manual, though all the published research is on migraine) or as a daily preventive. Since I have (had!) migraines every day, I hoped for both. Not only did I experience diminishing returns of acute relief, I never noticed a preventive effect. Stopping it did not increase my migraine frequency, severity or duration.
I’ve heard from about a dozen of you who tried the Cefaly. No one reported relief even as significant as I had early on and half couldn’t use the device because the sensation in their foreheads was unbearably painful. The Daily Headache readers tend to have chronic and/or severe chronic disorders, so we’re unlikely to be a representative sample. Maybe it’s less effective for people with more severe headache disorders or our propensity toward more significant allodynia (sensitivity to touch) makes it more painful than normal. (If you’re worried it will be painful for you, see if someone you know has a TENS unit you can try. The Cefaly is different than a standard unit in its electrode shape and preset programs, but you’ll get an idea of what it feels like.)
Do I rescind my recommendation? Somewhat surprisingly, no. As long as it’s in your budget (it is returnable, but you’ll be out shipping to and from Canada and a 20% restocking fee), I say go for it. We all respond to different treatments and several headache specialists have told me that even a 10% response rate in early research is encouraging. If you want to explore nerve stimulation without invasive surgery, want a drug-free treatment or haven’t had much luck with standard treatments, the Cefaly is, at the very least, worth a try.
I still have mine and will try it again soon. I’m hopeful that a few months without it will be a sort of reset.