What is the HAM-A used for?

The HAM-A is used to measure how severe a person's anxiety symptoms are and to track how they change over time. Clinicians rate 14 symptom items during an interview to produce a single score, which helps document severity, monitor response to care, and guide clinical decision-making for people with anxiety.

How many items are on the HAM-A?

The HAM-A has 14 items, and each rates a group of anxiety symptoms. The items cover psychic anxiety, such as anxious mood, tension, fears, and difficulty concentrating, and somatic anxiety, such as muscular, cardiovascular, respiratory, and gastrointestinal complaints. A final item rates behavior the clinician observes during the interview.

How is the HAM-A scored?

A clinician rates each of the 14 items from 0, meaning not present, to 4, meaning very severe, based on a structured interview. The ratings are added together for a total between 0 and 56. Higher totals indicate more severe anxiety, and the same items can be re-scored at later visits to track change.

What score indicates severe anxiety on the HAM-A?

The HAM-A has no single official cutoff, but commonly used ranges classify 0 to 7 as no or minimal anxiety, 8 to 14 as mild, 15 to 23 as moderate, and 24 or above as severe. These bands align with cutoffs derived by Matza and colleagues, and they guide follow-up rather than diagnose.

Who can administer the HAM-A?

The HAM-A is clinician-rated, so it is completed by a trained professional who interviews the patient and scores each item, rather than filled out by the patient alone. Consistent training helps raters apply the 0 to 4 anchors the same way, which keeps scores comparable across different visits and different clinicians.

Is the HAM-A free to use?

Yes. The Hamilton Anxiety Rating Scale is in the public domain, so it can be used and administered without a license fee. It remains one of the most widely used anxiety severity measures in both clinical care and research, which makes it easy to compare scores against published data.

Hamilton Anxiety Rating Scale | Template & auto-scoring

The Hamilton Anxiety Rating Scale (HAM-A) is a clinician-rated questionnaire that measures the severity of anxiety symptoms in adults. First published by Max Hamilton in 1959, it uses 14 items covering psychological and physical signs of anxiety, each scored from 0 to 4, to produce a single severity total that guides clinical decision-making.

Why healthcare providers use the HAM-A

Standardized severity measure. It converts a clinical interview into a consistent 0 to 56 score, so anxiety severity is documented the same way across clinicians.
Treatment monitoring. Repeat administration tracks whether symptoms improve over a course of care, a role it has held in clinical trials for decades.
Common research language. As one of the most widely used anxiety outcome measures, it lets you compare findings against a large body of published data.
Separates symptom types. Distinct psychic and somatic items show whether anxiety presents more as worry or as physical complaints.

Which settings use the HAM-A?

Psychiatry and mental health clinics. Used to grade anxiety severity at intake and across follow-up visits.
Primary care. Helps clinicians quantify anxiety when patients present with worry or unexplained physical symptoms.
Clinical research. Serves as a standard endpoint in trials that test anxiety treatments.

What does the HAM-A measure?

The HAM-A rates the severity of anxiety across 14 items, each covering a symptom area. A clinician scores every item from 0 (not present) to 4 (very severe) based on a structured interview. The items group into two broad domains that together capture the emotional and bodily experience of anxiety.

Psychic anxiety. Covers anxious mood, tension, fears, insomnia, difficulty concentrating, and depressed mood.
Somatic anxiety. Covers muscular, sensory, cardiovascular, respiratory, gastrointestinal, genitourinary, and other autonomic symptoms.
Behavior at interview. A final item rates observed signs such as restlessness, fidgeting, and tremor during the assessment.

Scoring the HAM-A

Number of items: 14.
Per-item scale: each item is rated 0 (not present) to 4 (very severe).
Total score range: 0 to 56, summed across all 14 items.
Score direction: higher totals indicate more severe anxiety.

The HAM-A has no single official cutoff, and severity bands vary slightly between sources. The ranges below are commonly used in clinical practice and are consistent with the empirically derived cutoffs reported by Matza and colleagues (2010). Because the scale is clinician-rated and was designed for people already identified with anxiety, scores support clinical judgment rather than replace a diagnostic evaluation.

Score	Interpretation	Suggested next step
0 to 7	No or minimal anxiety	Monitor
8 to 14	Mild anxiety	Watchful waiting
15 to 23	Moderate anxiety	Consider further assessment
24 to 56	Severe anxiety	Consider further assessment

Best practices for administration

Use a trained rater. The HAM-A is clinician-rated, so scores are most reliable when a trained clinician conducts the interview.
Rate the recent period. Score each item on how the patient has felt over the past week unless your protocol specifies otherwise.
Follow the item anchors. Apply the 0 to 4 definitions consistently so scores stay comparable across visits and raters.
Re-administer on a schedule. Repeating the scale at set intervals shows whether severity is changing over a course of care.
Record the context. Note anything that could affect scoring, such as medical conditions that can mimic somatic anxiety symptoms.

How Zentake helps with the HAM-A

Automatic scoring. Zentake totals every item on submit, so there is no hand-tallying.
Longitudinal tracking. Re-send the HAM-A on a schedule and view change over time.
Before the visit. Mental health practices can gather intake and self-report history ahead of time on any device, so the clinician starts the rating informed.
HIPAA compliant. Data is encrypted, with a signed BAA on every plan.

References

Hamilton M. The assessment of anxiety states by rating. British Journal of Medical Psychology. 1959;32(1):50-55. This is the original publication that introduced the 14-item scale.

Matza LS, Morlock R, Sexton C, Malley K, Feltner D. Identifying HAM-A cutoffs for mild, moderate, and severe generalized anxiety disorder. International Journal of Methods in Psychiatric Research. 2010;19(4):223-232. View on PubMed.

Last updated: August 2026

Hamilton Anxiety Rating Scale