Some studies have shown this to be at least as effective an intervention as the use of drugs. O.W. Biofeedback couldn't be all that common a treatment. One of our family members has severe migraine headaches, and I'm not aware that any doctor has suggested this to her. In Vermont, some insurers have specifically excluded biofeedback as a covered treatment. In California, it's included in most insurance, so it's more common.
Health care is to some extent driven by insurance.
Over the past 15 years that I've been interested in Medical Psychology there's been some improvement in availability. But recently there's been a lot more interest in the idea. And I'm in the process of starting a book outline with an anesthesiologist in California. At Copley I've been working with the Psychological aspects of medical problems. I started working with cardiac patients who were trying to resume a normal lifestyle, and who exhibited a high incidence of Depression.