From The Art and Popular Culture Encyclopedia
A trashcan diagnosis or wastebasket diagnosis is a vague or fake medical or psychiatric diagnosis given to a patient or to medical records department for essentially non-medical reasons.
Fake diagnoses are not a modern invention. Medicine around the world has a long history of using and abusing the concept of trashcan diagnoses, from "rectifying the humors" to marthambles to neurasthenia to garbled Latin-sounding names which were made up to impress the patient's family.
- Diagnosis of exclusion, the diagnosis given to a patient when all other plausible options have been ruled out