Mood disorders

Also known as affective disorders, this group is marked by persistent and significant mood changes that impair daily functioning—ranging from low mood (depression), elevated mood (mania or hypomania), to alternating episodes (bipolar disorder).

Source: APA, DSM‑5 (2013); WHO, ICD‑11 (2017). Additional references: Goodwin & Jamison, Manic‑Depressive Illness (2007); American Psychiatric Association, Practice Guideline for the Treatment of Patients with Major Depressive Disorder (2010).