CAM, standing for Complementary and Alternative Medicine (sometimes SCAM for Supplementary, Complementary and Alternative Medicine), denotes a philosophical dumping ground for all medical theories that have been rejected by science. Like alternative medicine before it, CAM has now become so debased as a term that it has been rebranded yet again, this time as integrative medicine.
And if you don't think it's real, or don't think people who have funding to spend notice it, the National Center for Complementary and Alternative Medicine is run by the National Institute of Health.
"You know what they call alternative medicine that's been proved to work? Medicine." —Tim Minchin
The rebranding of alternative medicine is analogous to the endless rebranding of creationism to try to evade the First Amendment. The original term, alternative medicine, was trivially unmasked as alternatives to medicine, and tended to emphasis its status as being outside of scientific medical practice. CAM is the "creation science" of alternative medicine; there are many legitimate complementary therapies such as massage, counselling and so on, and by claiming to be part of this, rather than acknowledging its status as being apart from medicine, CAM hoped to gain a halo effect and imply that it might legitimately claim a place in medical practice.
 Ernst's Law
Ernst's Law, attributed to Andy Lewis of The Quackometer, states:
“”If you are researching complementary and alternative medicine (CAM) and you are not hated by the CAM world, you're not doing it right.
Refers to Edzard Ernst, an academic physician and researcher specializing in the study of complementary and alternative medicine. Ernst retired in June 2012 as Professor of Complementary Medicine at the University of Exeter, the first such academic position in the world.
He is regularly the subject of ad hominem attacks from CAM practitioners who have difficulty dealing with his deconstruction of the anecdotes that they present in lieu of evidence for the 'efficacy' of their activities.
 See also
- Tom Harkin, the Senatorial quackery pusher behind NCCAM
- Wiki4CAM their (comatose) wiki
- Pseudoscientific method