wastebasket diagnosis
n.β Β«They think of fibromyalgia as a label given to patients with many painful physical complaints, but normal test results. This is commonly called a βwastebasket diagnosisβ used when all the clearly definable diseases have been tested for and eliminated as possibilities.Β» ββNew drug treats a questionable disease” by Terry Gaff FWDailynews.com (Kendallville, Indiana) Jan. 20, 2008. (source: Double-Tongued Dictionary)