Euthymia (medicine)

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Euthymia is defined as a normal, tranquil mental state or mood. It is often used to describe a stable mental state or mood in those affected with bipolar disorder that is neither manic nor depressive, yet is distinguishable from healthy controls. Euthymia is also used to describe the “baseline” of other cyclical mood disorders like major depressive disorder (MDD), borderline personality disorder (BPD) and narcissistic personality disorder (NPD). This state is the goal of psychiatric and psychological interventions.[1]

The word “euthymia” traces its roots to the Greek words “eu”, meaning well, and “thymo”, meaning soul or emotion. The word “thymos” also had four additional meanings: life energy; feelings and passions; desires and inclinations; and thought or intelligence. Euthymia is also derived from a verb, “euthymeo”, that means both “I am happy, in good spirits” and “I make others happy, I reassure and encourage”. This is the basis on which the first formal definition of euthymia was built.[1]

Democritus said that the state of euthymia is when “one is satisfied with what is present and available, taking little heed of people who are envied and admired and observing the lives of those who suffer and yet endure”. This was later amended in the translation given by the Roman philosopher Seneca the Younger in which euthymia means a state of internal calm and contentment. Seneca was also the first to link the state of euthymia to a learning process; in order to achieve it, one must be aware of psychological well-being. Seneca’s definition included a cache[clarification needed] about detachment from current events. Later, the Greek biographer Plutarch removed this cache with his definition which focused more on learning from adverse events.[1]

In 1958, Marie Jodah gave a modern clinical definition of mental health in the terms of positive symptoms by outlining the criteria for mental health: “autonomy (regulation of behavior from within), environmental mastery, satisfactory interactions with other people and the milieu, the individual’s style and degree of growth, development or self-actualization, the attitudes of an individual toward his/her own self”. In her definition she acknowledged the absence of disease as being necessary, but not enough, to constitute positive mental health, or euthymia.[1]

Carol Ryff (1989) was the first to develop a comprehensive scale that could assess euthymia: the Six-factor Model of Psychological Well-being. The 84-item scale includes facets of self-acceptance, positive relations with others, autonomy, environmental mastery, purpose in life, and personal growth. It did not include a notion of resilience, which people in the field started working to add in the 2000s.[1]

Parathymia on the other hand, is related to pathological laughter (called “Witzelsucht”).[2]

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  1. ^ a b c d e Fava, GA; Bech, P (January 2016). "The Concept of Euthymia". Psychotherapy and Psychosomatics. 85 (1): 1–5. doi:10.1159/000441244. PMID access
  2. ^ Black DW (1982). "Pathological laughter. A review of the literature". J Nerv Ment Dis. 170 (2): 67–71. doi:10.1097/00005053-198202000-00001. PMID 7057172. S2CID 25616832.