Scott Adams, creator of Dilbert, regained his ability to speak after 18 months of Spasmodic Dysphonia, an exotic brain disorder. Just an amazing story, and hundreds of readers have left comments on his post, "Good News Day."
The disorder was not well understood, but somehow the part of the brain that controls speech shuts down. Adams suspected that the connection between that part of the brain and his vocal cords had been lost. He tried one method after another, trying to remap or recreate or revive that link, and he found it in verse. You couldn't think of a more beautifully metaphoric solution for the loss of speech than that.