Table 1 Diagnostic criteria of a depressive episode in the DSM-5 and ICD-11.

From: Introducing a depression-like syndrome for translational neuropsychiatry: a plea for taxonomical validity and improved comparability between humans and mice

Classification - syndrome definition

Diagnostic requirements

Severity assessment

Other

DSM-5

Single

depressive

episode

(296.21 ff.)

Criteria: (1) depressed mood, (2) diminished interest or pleasure in activities, (3) significant weight or appetite change, (4) insomnia or hypersomnia, (5) psychomotor agitation or retardation, (6) low energy/fatigue, (7) feelings of worthlessness or inappropriate guilt, (8) reduced ability to concentrate or indecisiveness, (9) thoughts of death, suicidal ideation, and/or suicide attempts

Five or more symptoms for ≥ 2 weeks including (1) and/or (2)

Based on symptom amount and intensity and functional impairment (mild, moderate, severe).

'Specifiers’ to represent clinical depression heterogeneity

ICD-11

Single episode; depressive disorder

(6A70 ff.)

Criteria: (1) depressed mood, (2) diminished interest or pleasure in activities, (3) low concentration, indecisiveness, (4) feelings of low

self-worth, (5) hopelessness towards the future,

(6) thoughts of death, suicidal ideation, and/or suicide attempts, (7) disturbed sleep pattern, (8) changes in appetite or weight, (9) psychomotor agitation or retardation, (10) low energy/fatigue

Significant distress or impairment in occupational, social, or other important areas of functioning.

Based on overall symptom intensity and functional impairment (mild, moderate, severe).

'Qualifiers’ to represent clinical depression heterogeneity