Depression (mood)

Depression
Lithograph of a person diagnosed with melancholia and strong suicidal tendency in 1892
SpecialtyPsychiatry, psychology
SymptomsLow mood, aversion to activity, loss of interest, loss of feeling pleasure
CausesBrain chemistry, genetics, life events, medical conditions, personality[1]
Risk factorsStigma of mental health disorder[2]
Diagnostic methodPatient Health Questionnaire, Beck Depression Inventory
Differential diagnosisAnxiety, bipolar disorder, borderline personality disorder
PreventionSocial connections, physical activity
TreatmentPsychotherapy, psychopharmacology

Depression is a mental state of low mood and aversion to activity.[3] It affects about 3.5% of the global population, or about 280 million people worldwide, as of 2020.[4] Depression affects a person's thoughts, behavior, feelings, and sense of well-being.[5] The pleasure or joy that a person gets from certain experiences is reduced, and the afflicted person often experiences a loss of motivation or interest in those activities.[6] People with depression may experience sadness, feelings of dejection or hopelessness, difficulty in thinking and concentration, or a significant change in appetite or time spent sleeping; suicidal thoughts can also be experienced.

Depression can have multiple, sometimes overlapping, origins. Depression can be a symptom of some mood disorders, some of which are also commonly called depression, such as major depressive disorder, bipolar disorder and dysthymia.[7] Additionally, depression can be a normal temporary reaction to life events, such as the loss of a loved one. Depression is also a symptom of some physical diseases and a side effect of some drugs and medical treatments.

  1. ^ "Depression". Cleveland Clinic. 2022. Retrieved 9 June 2022.
  2. ^ Shrivastava A, Bureau Y, Rewari N, Johnston M (April 2013). "Clinical risk of stigma and discrimination of mental illnesses: Need for objective assessment and quantification". Indian Journal of Psychiatry. 55 (2): 178–82. doi:10.4103/0019-5545.111459. PMC 3696244. PMID 23825855.
  3. ^ "Depression Basics". NIMH. 2016. Archived from the original on 11 June 2013. Retrieved 22 October 2020.
  4. ^ "Depression". www.who.int. Archived from the original on 26 December 2020. Retrieved 7 April 2021.
  5. ^ de Zwart PL, Jeronimus BF, de Jonge P (October 2019). "Empirical evidence for definitions of episode, remission, recovery, relapse and recurrence in depression: a systematic review". Epidemiology and Psychiatric Sciences. 28 (5): 544–562. doi:10.1017/S2045796018000227. PMC 7032752. PMID 29769159.
  6. ^ Gilbert P (2007). Psychotherapy and counselling for depression (3rd ed.). Los Angeles: Sage. ISBN 978-1-84920-349-4. OCLC 436076587.[page needed]
  7. ^ American Psychiatric Association (2013). Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition (DSM-5). American Psychiatric Association.[page needed]

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