Stigwort's Disease

From Fancyclopedia 2, ca. 1959

baffles the analysis of mundane pathologists. Walt Willis discovered this subtle disease, which displays absolutely no symptoms until the patient succumbs. You can go along, to all outward appearances perfectly sound and healthy, for seventy or eighty years, and then, zap! Over you go. Walt intends to Reveal All concerning this disease in the pages of Reader's Digest as soon as he invents a miracle drug to cure it with.