The Geriatric Depression Scale (GDS) is a fundamental screening tool in geriatric psychiatry, designed to bypass the physical confounders of aging that invalidate standard depression tests.
The Mask of Aging
Depression in the elderly is notoriously underdiagnosed. It frequently presents not as "sadness," but as apathy, irritability, or cognitive slowing (pseudodementia). Furthermore, an elderly patient with arthritis and heart failure will naturally complain of poor sleep, low energy, and poor appetite. If you use a standard depression test that heavily weighs these physical (somatic) symptoms, every sick elderly patient will score as "severely depressed."
The GDS Approach
The GDS strictly focuses on psychological and emotional states. It asks simple Yes/No questions:
- Have you dropped many of your activities and interests?
- Do you feel that your life is empty?
- Are you afraid that something bad is going to happen to you?
- Do you feel full of energy? (Reverse scored)
Sum of points (0-1) from 15 yes/no questions tailored for older adults.
A score > 5 warrants further psychiatric evaluation, as untreated depression in the elderly drastically increases mortality from other medical conditions and carries a high risk of suicide.