Hamilton Anxiety Rating Scale (HAM-A)

Max Hamilton · 1959

Clinician-rated anxiety severity scale across psychic and somatic domains, coded as reported evidence.

The Hamilton Anxiety Rating Scale (HAM-A) is a clinician-administered measure of anxiety severity across psychic and somatic domains. This scale includes the content-localizable items that can be grounded in what the subject reports.

Used here as an evidence scale: highlight the span where the subject reports the experience an item measures (e.g. anxious mood, tension, autonomic symptoms) rather than a linguistic form. Each item is rated on the HAM-A 0-4 severity range.

Domains (11)

Anxious MoodANX

Reported worry, apprehension, and anticipation of the worst.

Curated skill
TensionTEN

Reported inability to relax, startling, trembling, or restlessness.

Curated skill
FearsFEA

Reported specific phobic fears (dark, strangers, being alone, animals, traffic, crowds).

Curated skill
InsomniaINS

Reported difficulty sleeping, broken or unrefreshing sleep, or nightmares.

Curated skill
CognitiveCOG

Reported difficulty concentrating or poor memory.

Curated skill
Depressed MoodDEP

Reported loss of interest, lack of pleasure, low mood, or diurnal swing.

Curated skill
Somatic MuscularMUS

Reported muscle aches, stiffness, twitching, or teeth-grinding.

Curated skill
CardiovascularCVS

Reported palpitations, racing heart, chest pain, or faintness.

Curated skill
RespiratoryRSP

Reported chest tightness, choking, breathlessness, or sighing.

Curated skill
GastrointestinalGAS

Reported nausea, abdominal pain, bloating, or bowel disturbance.

Curated skill
AutonomicAUT

Reported dry mouth, sweating, flushing, dizziness, or tension headache.

Curated skill
Hamilton M. The assessment of anxiety states by rating. Br J Med Psychol. 1959;32(1):50-55. doi:10.1111/j.2044-8341.1959.tb00467.x

Public domain (Hamilton 1959); freely reproducible.