Hamilton Anxiety Rating Scale

HAM-A — 14 items — clinician-rated

A clinician-rated scale for the severity of anxiety. Rate it during or after your interview with the client.

For clinicians

The HAM-A is completed by you, not the client. After a clinical interview, rate each of the 14 symptom areas from 0 (not present) to 4 (very severe).

Ratings stay on this device and aren't saved anywhere.

Send to a client

This is a clinician-rated scale — you fill it in during or after the session — so it isn’t sent to clients.

About the HAM-A

The Hamilton Anxiety Rating Scale is filled in by the clinician, not the client. After talking with the person, you rate 14 areas of anxiety — from worry and tension to physical symptoms like a racing heart or stomach upset.

It’s one of the longest-standing measures of anxiety severity, and is still widely used to track how symptoms change over time.

Items
14
Time
15–20 minutes
Rated by
Clinician
Score range
0–56

How it’s scored

Each area is rated from 0 (not present) to 4 (very severe), giving a total from 0 to 56. Items 1–6 and 14 make up psychic anxiety (the mental side) and items 7–13 somatic anxiety (the physical side).

The severity ranges below are commonly used, but published cut-offs vary between sources. Treat them as a rough guide rather than firm thresholds.

HAM-A score ranges
ScoreSeverity
0–17 Mild anxiety
18–24 Mild to moderate anxiety
25–30 Moderate to severe anxiety
31–56 Severe anxiety

Good to know

  • Ratings depend on the interview, so a consistent, semi-structured approach makes scores more comparable over time.
  • Many items are physical, so medical conditions and some medicines can raise the score.
  • It overlaps quite a lot with depression symptoms, so it doesn’t separate the two well.
  • It isn’t a diagnosis, and it doesn’t assess risk.

Source

Hamilton M. The assessment of anxiety states by rating. British Journal of Medical Psychology, 1959; 32(1): 50–55.

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