The Hamilton Anxiety Scale (HAM-A) is a widely used clinician-administered questionnaire designed to assess the severity of anxiety symptoms in individuals. It consists of 14 items that evaluate both psychological and physical aspects of anxiety, such as feelings of tension, worry, and somatic complaints. Each item is scored on a scale from 0 to 4, allowing for a comprehensive assessment of anxiety levels. Developed by Max Hamilton in 1959, the HAM-A is often utilized in clinical settings and research to monitor treatment progress and evaluate the effectiveness of therapeutic interventions. It provides valuable insights for healthcare professionals in diagnosing and managing anxiety disorders.