Hemicrania continua for the headache. When the symptoms of hemicrania continua are present, it's considered "diagnostic" if they respond completely to indomethacin. The efficacy of indomethacin may not be long term for all patients, as can eventually become ineffective. The factor that allows hemicrania continua and its exacerbations to be differentiated from migraine and cluster headache is that hemicrania continua is completely responsive to indomethacin. Triptans and other abortive medications do not affect hemicrania continua. In addition to persistent daily headache of HC, which is usually mild to moderate (and frequently severe), HC can present other symptoms. These additional symptoms of HC
Known Space novels as books. Some of the shorter novels (novellas) published in magazines were expanded as, or incorporated in, book-length novels. There are also two or three short stories which share common themes and some background elements with "Known Space" stories, but which are not considered a part of the "Known Space" universe: "One Face" (1965) and "Bordered in Black" (1966) —both in the 1979 collection "Convergent Series"—and possibly "The Color of Sunfire", published online and listed here. In the "Known Space" stories, Niven had created a number of technological devices (GP hull, stasis field, Ringworld material) which, combined with the