Questionnaires

K10 (Kessler)

Kessler Psychological Distress Scale (K10)

When to use

Brief screening for non-specific psychological distress; alternative or complement to PHQ-9/GAD-7 when a non-specific measure is preferred.

Instructions

The following questions ask about how you have been feeling during the past 30 days.

Alert threshold: 25

Score ≥25: structured evaluation with PHQ-9 + GAD-7. ≥30: refer to mental-health services.

Source and citation

Decision support only: it does not replace clinical judgement.