Chronic paroxysmal hemicrania Chronic paroxysmal hemicrania Chronic paroxysmal hemicrania (CPH), also known as Sjaastad syndrome, is a severe debilitating unilateral headache usually affecting the area around the eye. It normally consists of multiple severe, yet short, headache attacks affecting only one side of the cranium. It is more commonly diagnosed in women than in men, but, unlike a migraine, has no neurological symptoms associated with it. CPH headaches are treated through the use of non-steroidal anti-inflammatory drugs, with indomethacin found to be usually effective in eliminating symptoms. Paroxysmal hemicrania is classified by the frequency and duration of attacks experienced by patients. Episodic paroxysmal
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