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Cornell Scale for Depression (CSDD)

CSDD: Administered by clinician using structured informant interview + direct patient observation. Do not use during active delirium.

Rate each item: 0 = Absent | 1 = Mild/Intermittent | 2 = Severe

Mood-Related Signs

Anxiety — anxious expression, ruminations, worrying

Sadness — sad expression, sad voice, tearfulness

Lack of reactivity to pleasant events

Irritability — easily annoyed, short-tempered

Behavioural Disturbance

Agitation — restlessness, handwringing, hair-pulling

Retardation — slow movements, slow speech, slow reactions

Multiple physical complaints (score 0 if GI symptoms only)

Loss of interest — less involved in usual activities

Physical Signs

Appetite loss — eating less than usual

Weight loss (2 lbs or more in 1 month)

Lack of energy — fatigues easily, unable to sustain activities

Cyclic Functions

Diurnal variation of mood — symptoms worse in the morning

Difficulty falling asleep

Multiple awakenings during sleep

Early morning awakening — earlier than usual

Ideational Disturbance

Suicidal ideation — feels life is not worth living, has suicidal wishes, or makes attempt

Poor self-esteem — self-blame, self-depreciation, feelings of failure

Pessimism — anticipation of the worst

Mood-congruent delusions — delusions of poverty, illness, or loss

Guidelines & Evidence

Verified

Last Review: 2026

When to Use

When to Use

Detecting depression in patients with mild to severe dementia where self-report scales are unreliable.
Distinguishing depressive pseudodementia from primary dementia.
Monitoring antidepressant treatment response in dementia patients.
Routine assessment in memory clinics and dementia care units.

Why Not GDS-15 in Dementia?

The GDS-15 and PHQ-9 rely entirely on patient self-report. In moderate-to-severe dementia, patients cannot reliably introspect or remember their mood states. The CSDD uses structured informant interview combined with direct patient observation to overcome this limitation.

Related Scores in Practice

In clinical practice, this assessment is frequently evaluated alongside other validated measures. Depending on the patient's presentation and specific diagnostic requirements, you may also need to utilize the Geriatric Depression Scale (GDS-15), CAM — Confusion Assessment Method or the Cdr Dementia Rating to formulate a comprehensive care plan.

Last Comprehensive Review: 2026

Related Geriatrics Tools

Clinical Dementia Rating
Functional Reach Test
ACS-NSQIP Surgical Risk Calculator
HELP Score
Katz Index of Independence in ADLs
Drug Burden Index
Cornell Scale for Depression
Barthel Index
Berg Balance Scale
Groningen Frailty Indicator
Geriatrics CalculatorsInternal Medicine CalculatorsEmergency Medicine Calculators
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