Its mysterious power may be a clue to a new theory about brains and bodies. by Atul Gawande June 30, 2008 Scientists once saw itching as a form of pain. They now believe it to be a different order of sensation. Photograph by Gerald Slota. Keywords Itching; Scratching; Oaklander, Anne Louise (Dr.); Neurology; Brain; Obsessive-Compulsive [...]