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PHQ-9

PHQ-9 Depression Scale: The absolute gold standard for screening and monitoring the severity of depression in clinical practice.

1. Little interest or pleasure in doing things?

2. Feeling down, depressed, or hopeless?

3. Trouble falling or staying asleep, or sleeping too much?

4. Feeling tired or having little energy?

5. Poor appetite or overeating?

6. Feeling bad about yourself?

7. Trouble concentrating on things?

8. Moving or speaking slowly, or being fidgety/restless?

9. Thoughts that you would be better off dead?

Guidelines & Evidence

Verified

Last Review: 2026-07-10

When to Use

How it Works

Clinical Pearls

Next Steps

The Evidence

Origins & History

Last Comprehensive Review: 2026

Recent Journal Updates

British J HaematologyJul 8, 2026
Mechanisms of resistance to macrophage checkpoint inhibitors in B‐cell non‐Hodgkin lymphoma for the British Journal of Haematology

Clinical Context

We think this has broad domain relevance to PHQ 9.

Tropical Med & Intl HealthJul 3, 2026
Phenotypic Trends and Molecular Mechanisms of Helicobacter pylori Antibiotic Resistance in Bangladesh: A Scoping Review

Clinical Context

We think this has broad domain relevance to PHQ 9.

WHO NewsJul 2, 2026
WHO adds first diagnostic test for Ebola Bundibugyo virus to its Emergency Use Listing

Clinical Context

We think this has broad domain relevance to PHQ 9.