Clinical depression classification

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]

Classification

• Depressive disorders include:
  • Major depressive disorder:
  • Persistent depressive disorder (or dysthymia): Dysthymia is mild, chronic depression that lasts at least 2 years, and on most days, patients experience depressed mood for most of the day and at least two other symptoms of depression.
  • Premenstrual dysphoric disorder:
  • Substance/medication-induced depressive disorder:

This condition is characterized by a depressed mood that is due to a substance, for example, Alcohol or medications (e.g. barbiturates).

• • Depressive disorder due to another medical condition:

This condition is characterized by a depressed mood secondary to a medical disorder such as Hypothyroidism, or Cushing's syndrome.

• • Other specified depressive disorder:

This diagnostic category includes two subtypes 1) Recurrent depressive episode: depression that lasts 2-13 days and occurs at least once a month 2) short-duration depressive episode: a depressed mood lasting 4-14 days, and is nonrecurrent

• • Unspecified depressive disorder:
    • This diagnostic category includes 4 major subtypes:

1) Melancholia: a severe form of depression characterized by anhedonia, hopelessness, and psychomotor retardation 2) Atypical depression 3) Peripartum depression (previously called postpartum depression) 4) Seasonal pattern (previously called seasonal affective disorder)

• • Disruptive mood dysregulation disorder: This disorder is characterized by severe temper tantrums, chronic irritability, and angry mood in children 6-18 years of age.