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PHQ-15 Somatic Symptom Severity Scale

Measure the burden of physical symptoms with the 15-item Patient Health Questionnaire.

By Dr Amer Sheikh, GP Updated 17 October 2026 Clinical review pending

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What is the PHQ-15?

The PHQ-15 asks how much 15 common physical symptoms have bothered someone in the last four weeks. Each scores 0 to 2.

PHQ-15 scoring

ScoreSomatic symptom severity
0–4Minimal
5–9Low
10–14Medium
15–30High

A high score suggests a symptom burden worth exploring. It does not replace assessment for organic causes.

Frequently asked questions

How is the PHQ-15 scored?

15 items score 0 to 2, giving 0 to 30.

What is a high PHQ-15 score?

15 or more indicates high somatic symptom severity.

Is the PHQ-15 useful in primary care?

Yes. It helps track persistent physical symptoms over time.

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References

  1. Kroenke K, Spitzer RL, Williams JB. The PHQ-15: validity of a new measure for evaluating the severity of somatic symptoms. Psychosom Med 2002;64(2):258–66.

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