I wholeheartedly agree, and if a doctor says it's been called a Somethingus Whateverus since the time of Julius Caesar, then it shall be changed at once.  Hiccups are also a diaphragm spasm, but not of the getting-the-wind-knocked-out-of-you sort.  That pretty much sums up how I saw the issue.  There's got to be a medical name for it.  Just no one here knows it.