The Hamilton Anxiety Rating Scale (HAM-A) is a widely used clinical tool designed to assess the severity of anxiety symptoms in individuals. Developed by Max Hamilton in 1959, it consists of 14 items that evaluate both psychological and physical aspects of anxiety, such as tension, fears, and sleep disturbances. Each item is scored on a scale from 0 to 4, allowing healthcare professionals to quantify the level of anxiety experienced by a patient. The HAM-A is often utilized in both research and clinical settings to monitor treatment progress and evaluate the effectiveness of interventions. It provides a structured way for clinicians to communicate about a patient's anxiety and helps guide treatment decisions. The scale is considered reliable and valid for assessing anxiety levels in various populations.