Self Screen

Patient Health Questionnaire-9

9-item self-report tool for assessing symptoms of depression. Widely recognized as one of the most commonly used screening instruments for depressive disorders.

Take the PHQ-9 test for free.

Depression (Major Depressive Disorder)

Depression is more than just “feeling sad.” It’s a medical condition that affects mood, energy, sleep, appetite, concentration, and daily functioning. Recognizing it early can make treatment more effective and prevent symptoms from becoming overwhelming.

Patient Health Questionnaire-9

The PHQ-9 is a brief, evidence-based questionnaire designed to evaluate the presence and severity of depressive symptoms.

  • Format

    9 questions, each rated on a 0–3 scale (from “not at all” to “nearly every day”).

  • Authors

    Developed by Drs. Robert L. Spitzer, Janet B. W. Williams, Kurt Kroenke, and colleagues with support from Pfizer.

  • Purpose

    To quickly screen for depression and monitor changes in symptom severity over time.
Important
The PHQ-9 is a self-screening instrument, not a diagnostic tool. A high score does not automatically mean someone has depression. Only a qualified mental health professional can provide an official diagnosis and recommend appropriate treatment.

When the PHQ-9 Is Used

The PHQ-9 is one of the most frequently used mental health screening tools worldwide. It is helpful for:

  • Individuals experiencing persistent sadness, fatigue, or loss of interest in daily activities

  • Primary care and mental health providers who need a fast, standardized tool for depression screening

  • Ongoing monitoring of treatment response and symptom changes over time

Download the app
and take the PHQ-9 test for free.

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