Type of Tool: Diagnostic
Repeatability: Repeatable by Clinician’s Judgment
Description: The Hamilton Anxiety Rating Scale is designed to quantify the severity of anxiety symptoms and to assess the response to therapeutic interventions. It is a 14-item, clinician-administered instrument that measures current anxiety symptoms. The scales’ items measure: anxious mood, tension, fears, insomnia, intellectual impairment, depressed mood, somatic muscular and sensory complaints, cardiovascular, respiratory, and gastrointestinal symptoms, genitourinary symptoms, autonomic symptoms, and patient’s behavior at interview.
How to Use
The major value of HAM-A is to assess the patient’s response to a course of treatment, rather than as a diagnostic or screening tool. By administering the scale serially, a clinician can document the results of drug treatment or psychotherapy.
How to Score
Hamilton, M. (1959). The assessment of anxiety states by rating. British Journal of Medical Psychology, 32:50–55.
Hamilton Rating Scale for Anxiety