From 1992: A proposal to classify happiness as a psychiatric disorder

A proposal to classify happiness as a psychiatric disorder. R P Bentall. J Med Ethics. 1992 Jun; 18(2): 94–98. https://www.ncbi.nlm.nih.gov/pubmed/1619629

Abstract: It is proposed that happiness be classified as a psychiatric disorder and be included in future editions of the major diagnostic manuals under the new name: major affective disorder, pleasant type. In a review of the relevant literature it is shown that happiness is statistically abnormal, consists of a discrete cluster of symptoms, is associated with a range of cognitive abnormalities, and probably reflects the abnormal functioning of the central nervous system. One possible objection to this proposal remains--that happiness is not negatively valued. However, this objection is dismissed as scientifically irrelevant.